Tanjiro was writing in a journal that read "Journal Tanjiro Kamado." With Nezuko sleeping by his side, Tanjiro left the room and went to Sakonji who was turning out the light.

Sakonji: Let's go.

Tanjiro: Where's Y/n?

Sakonji: He said he was going to get something and come right back.

Y/n opened the entrance door and he was holding a sword sized box with him.

Y/n: I'm back.

Sakonji noticed the box.

Sakonji: What is in that box?

Y/n: When I join the Corps, I'll show you.

He placed the box down and looked at Sakonji and Tanjiro.

Y/n: Now, shall we get to training?

Tanjiro: Right.

Sakonji sat Tanjiro and Y/n down and told them about the Demon Slayer Corps.

Sakonji: The Demon Slayer Corps, number in the hundreds. An organization completely unrecognized by the government. Since ancient times, we have existed to hunt down demons. However, the identity of the Demon Slayer Corps leader, has always remained a mystery. Demons. Their staple food, humans. They hunt and kill them. It is unclear when or where they first appeare. Remarkable physical prowess. Their wounds heal almost instantly. Flesh completely restores itself, severed limbs regenerated. Some can shape shift. Some have other powers. They can only be killed by sunlight or decapitation with a special sword. The Demon Slayers fight these demons with mear mortal bodies. As humans, wounds are slow to heal, and they're lost limbs are unable to come back. Never the less, they fight... to protect and defend humanity.

Y/n: All right, now that you explained everything to the amateur, let's get this training started.

Sakonji: My, aren't you the eager one. I am a trainer. My job is to teach new swordsmen. There are many other trainers, each one is different. They all educate their students using their own methods. I'm sure you can confirm, Y/n.

Y/n: Yes. My master taught me the basics and I learned the first four forms of Wind Breathing under him. But I have a feeling you will train me differently than he did.

Sakonji: I might even train you completely different than I train Tanjiro. I will tell you the reason later. To complete your training and join the Demon Slayer Corps, you both will have to survive the Final Selection process on Mount Fujikasane. And I decide whether you two take that challenge or not. Now, Tanjiro, you will start your training by running down this mountain again. But this time you will not have Y/n to help you.

Tanjiro: Okay.

Sakonji: Y/n, while he is doing that I will give you another test.

Y/n: With any luck, this one might be a challenge.

Sakonji took Y/n aside to a clearing in the mountain.

Y/n: So, what do I need to do?

Sakonji: I want you to have a duel with me. Just to see where you are.

Y/n: Okay, but go get a sword first. I refuse to fight someone unarmed.

Sakonji: I will say this, your since of honor is admirable.

Sakonji suddenly ran at him with a sword that Y/n blocked with his own sword.

Sakonji: But don't think that a demon will have even a tiny since honor!

Y/n kicked Sakonji away and took a stance.

Y/n: You didn't say "start" yet. Seems like age is really affecting your memory.

Sakonji: Hmm. Perhaps you are right. Start!

They both dueled and Sakonji took a stance.

Sakonji: Total concentration. Water Breathing, Second Form: Water Wheel.

Sakonji span vertically making a type off Circle made of water around him. Y/n jumped and stood on a tree branch.

Y/n: (Thinking: Don't reveal too much too soon, Y/n.) Total concentration. Wind Breathing, First Form: Dust Whirlwind Cutter.

Y/n jumped down which caused a bigger Cyclone slash that Sakonji narrowly avoided.

Sakonji: (Thinking: He used the jump to create more wind so the slash would be stronger, impressive.) Water Breathing, Third Form: Flowing Dance.

Sakonji took many twists and turns to confuse Y/n which Y/n caught on to.

Y/n: (Thinking: Looks like I'll have to fight third Form with third Form.) Wind Breathing, Third Form: Clean Storm Wind Tree.

Y/n made a bunch of whirlwind pattern slashs that surround his body and he was able to block Sakonji's strike.

Sakonji: You are most impressive, of course I shouldn't expect anything less from someone who trained under a Hashira.

Y/n: Flattery won't help you, old man Urokodaki. Wind Breathing, Second Form: Claws-Purifying Wind.

Y/n made the same four claw strikes that Sakonji attempted to block.

Sakonji: Water Breathing, Sixth Form: Whirlpool.

A whirlpool surrounded Sakonji and blocked the claws, then he ran at Y/n.

Sakonji: Water Breathing: Eighth Form: Waterfall Basin.

Sakonji jumped up and slashed at Y/n vertically.

Y/n: Wind Breathing, Third Form: Clean Storm Wind Tree.

Y/n used the whirlwind defense again but he still got sent back into a tree

Sakonji: That's enough!

Sakonji sheathed his sword.

Sakonji: Great work, Y/n.

Sakonji walked to Y/n and offered a hand which Y/n took.

Y/n: So, how are you going to train me?

Sakonji: Well, you are pretty skilled in Wind breathing, so you must not have any interest in learning Water breathing. I can train you in other things, though.

Y/n: You mean, like that technique you use to completely conceal your presence?

Sakonji: Well, I wouldn't really call a "technique." But I can teach it to you.

Y/n: Very well, than.

Tanjiro and Y/n were writing in journals in the room Nezuko was in.

Tanjiro: (Writing: As of today, me and Y/n are both writing journals for Nezuko. I'm descending down the mountain again today. I'll train so I can survive the Final Selection. Day after day, I've made my way down the mountain, and I'm starting to learn how to avoid most of the traps. Because I'm much stronger now, and somehow I'm even better at picking up subtle scents than I was before. However, the traps are getting more difficult. I'm starting to think he wants me dead.)

Y/n: (Writing: Nezuko, I'm being trained differently than Tanjiro, but that doesn't mean my training is any easier than his's. Old man Urokodaki spent a full week teaching me how to conceal my presence, and make my footsteps absolutely silent. I had my struggles, but I eventually got it down.)

The next day.

Tanjiro was running down the mountain with a sword in his hand.

Tanjiro: (Writing: Today, I carried my sword with me down the mountain, but it made moving a lot harder.)

Tanjiro got caught into a rope trap.

Tanjiro: (Writing: The weights throwing me off, I get caught in every trap.)

Y/n's training.

Y/n was jumping through the tree branches.

Y/n: (Writing: Nezuko, I now have to jump tree branch to tree branch. Old man Urokodaki thinks it will better by balance and concentration. Not that I disagree with him or anything.)

Next day.

Tanjiro was swinging his sword.

Tanjiro: (Writing: Today I swung the sword. Actually, not just today. That's been everyday. As soon as I'm done the mountain, I swing it until I feel like my arms'll fall off.)

Tanjiro: 1,000!

Sakonji: Now, do 500 more!

Y/n was practicing his Wind Breathing techniques on trees.

Y/n: (Writing: Old man Urokodaki said that I should make my strikes more precised, so he put talismans on trees and made me strike them with Wind Breathing.)

He got finished writing and saw Tanjiro fell asleep while sitting up and Y/n laid Tanjiro down next to Nezuko.

The next morning.

Sakonji: Swords are a fragile weapons.

Tanjiro: (Writing: That's how my sword training started. Though strong along the blades edge, it's very weak on the sides, so obviously you have to apply the force where it's the strongest. The direction the blade is facing and the direction you swing have to be exactly the same, otherwise it will brake. Urokodaki told me "If you ever brake your sword, I'll break every bone in your body." He sounded just like that too.)

Y/n and Sakonji were in that same clearing.

Y/n: (Writing: Today, old man Urokodaki challenged me to take off his mask. He said I could use any method I wanted. So, I thought it would be easy. Boy, how wrong I was.)

Sakonji kept blocking Y/n sword strikes and stopping his hand from taking the mask.

Y/n: (Writing: After it went on for about two hours, he suggested I try again tomorrow. Me and your brother are working hard for you, never forget that.)

The next day.

Tanjiro had his sword was with Sakonji in the outing where Sakonji usually trains Y/n. Sakonji quickly knocked Tanjiro over.

Tanjiro: (Writing: Today, I fell down. I'm training to do it as softly as possible, so I can get up quickly from any position.)

Tanjiro got up and ran at Sakonji.

Tanjiro: (Writing: I raised my sword, charged Mr. Urokodaki, and tried to kill him. Meanwhile, he's unarmed and bare-handed.)

Sakonji grabbed Tanjiro by the front of his tunic and threw him.

Tanjiro: (Writing: But he's ridiculously strong! He throws me over his shoulder every time and I roll to the ground.)

Y/n was back to the mask training.

Y/n: (Writing: I tried again, and I was able to put up a better fight, but as soon as I got close to touching his mask he went harder on me. At the end of the day, I still couldn't get the mask.)

Tanjiro and Y/n went back to Nezuko who was still asleep.

Tanjiro: Nezuko, we're home.

The next day.

Tanjiro was back in the clearing.

Tanjiro: (Writing: Today's lesson was about Breathing techniques and fighting Forms.)

Tanjiro: Total Concentration Breathing? You mean, that thing Y/n does?

Sakonji: That's right. Also, I'm going to teach you how to use all ten Water Breathing forms. Start by taking a long deep breath so the oxygen flows into every cell in your body. This will enhance your healing ability, and stabilize as well as energize your spirit. Relax your arms and shoulders... but keep your lower body braced.

Tanjiro got into the stance.

Sakonji: Good, now breathe!

Tanjiro took the breath and Sakonji punched him in the gut.

Sakonji: Wrong! Next! Forms!

Tanjiro: Right!

Tanjiro took a different stance.

Tanjiro: How am I doing?

Sakonji: All wrong!

He took a different stance.

Tanjiro: How about now?

Sakonji: Still wrong!

Tanjiro: (different stance) Now?

Sakonji: Again!

Tanjiro: (different stance) Now?

Sakonji: Terrible!

Sakonji started punching Tanjiro's stomach again.

Tanjiro: (Writing: I get yelled at for not bracing my stomach... and clobbered to a pulp.)

Y/n was back with the mask training.

Y/n: (Writing: It feels like every time I get close to getting that mask off of old man Urokodaki's face, the harder he makes it for me.)

The next day.

Tanjiro and Sakonji were on a cliff near a waterfall.

Tanjiro: (Writing: My next lesson, I had to become one with the water.)

Sakonji: Get in already.

Sakonji kicked Tanjiro off the cliff into the water.

Tanjiro: I'm doing this for Nezuko!

Y/n was on a really tall tree on the mountain.

Y/n: (Writing: Old man Urokodaki said to go somewhere where it's hard to breathe and practice my breathing before I retook the mask test.)

Tanjiro: (Monologuing: As of now Nezuko's been asleep for six months, the entire time. Urokodaki sent for a doctor to come look at her, but he couldn't find anything. So, why are you still sleeping.)

Tanjiro and Y/n walked over to her.

Tanjiro: (Monologuing: I'm scared. I'm worried that one morning I'll wake up, and she'll be dead. Everyday, that thought haunts me.)

Y/n put his hand on Tanjiro's shoulder.

Y/n: It's gonna be okay, Tanjiro. She's a demon, she won't die easily.

The next day.

Tanjiro was running down the mountain again.

Tanjiro: (Writing: Coming down the mountain is even tougher now, I start higher, so the air is even thinner. More than a few times, I thought I was gonna die.)

When the traps came, Tanjiro deflected them with his sword.

Y/n's training.

Y/n fell down in a failed attempt to take Sakonji's mask.

Sakonji: You were so close that time.

Y/n: Can we take a small brake please?

Sakonji: Sure. I need to see how Tanjiro's doing anyway.

Y/n got up and started walking until he got to a town.

Y/n: (Writing: It was a good thing I stopped that spare when I did. Otherwise...)

Y/n bumbed into a drunk guy.

Y/n: Oh, sorry.

Drunk guy: Oh, don't think you're getting out of it that easy, kid!

The man ran at him but in a second, the man was on the ground in a pool of blood and Y/n was holding a heart in his hand with a psychotic grin on his face.

Y/n: (Writing: I would have ended up killing the old man to get his mask off.)

Y/n: How sad. Maybe in your next life you'll learn to except an apology.

He quickly got out of there.

With Tanjiro and Sakonji.

Sakonji: That's it, I've taught you all I can.

Tanjiro was panting.

Tanjiro: (Writing: Me and Y/n have been on Mount Sagiri for a year, and suddenly this...)

Sakonji: The rest is all up to you! You have to prove your cable of advancing to the next level. Come with me!

Tanjiro followed Sakonji to a big snowy area where there was a big boulder in the center of it.

Sakonji: If you can cut this Boulder in two, allow you to enter the Final Selection.

Tanjiro: (Thinking: Is that really... even possible? Can a sword cut through that? I'm gonna fail. My sword will brake.)

Sakonji started to walk away.

Tanjiro: Urokodaki, hang on a second! Urokodaki!

Sakonji was already long gone.

Tanjiro: (Writing: After that day, that was it, he never taught me anything again.)

Back with Y/n.

Y/n made it back to the clearing and Urokodaki came back too.

Y/n: All right, this time I'll take it off for sure.

Sakonji: Tell me, are you even trying?

Y/n: Of course I am!

Sakonji: Really? Then why haven't used the fourth form of wind breathing? And if you really were half demon, why won't you use your Blood Demon Art? I did say you were allowed to use any method.

Y/n: Well, I've never really had the best grip on my Blood Demon Art.

Sakonji: Just use it! If you don't give it your all, you'll never become a Demon Slayer!

Y/n thought for a moment.

Y/n: If that's what you really want, old man.

Sakonji: Begin!

Y/n disappeared and tried to kick Sakonji from behind, but Sakonji blocked it with the held of his sword.

Sakonji: (Thinking: He's faster than usual.)

Y/n: Total Concentration. Wind Breathing, Second Form: Claws-Purifying Wind.

Y/n sent the four claw strikes at Sakonji who was ready for it.

Sakonji: Total Concentration. Water Breathing, Third Form: Flowing Dance.

Sakonji twisted around the claws and went for Y/n.

Y/n: (Thinking: Time to give him what he wants.) Blood Demon Art: Blowing Gust!

Y/n blew a huge gust of wind and Sakonji and that nearly made him lose his footing.

Sakonji: (Thinking: So, this is Y/n's Blood Demon Art?) Water Breathing, Sixth Form. Whirlpool!

Sakonji used Whirlpool to suck up the wind and he continued to run at Y/n.

Sakonji: Water Breathing, Advanced Second Form: Lateral Water Wheel!

Sakonji was going for a horizontal slash on Y/n's chest.

Y/n: Wind Breathing, Third Form: Clean Storm Wind Tree.

Y/n used the hurricane slash pattern to stop Sakonji's attack and the two locked blades.

Sakonji: Your defense with this move have increased dramatically.

Y/n: I'm not holding back any more, so...

They broke apart and stood ten feet away from each other.

Y/n: Blood Demon Art: Rotating Wind Sphere. 20x

Y/n launched 20 spheres made of wind at Sakonji.

Sakonji: (Thinking: Looks like, I'll have to use that form.)

Sakonji took his stance.

Sakonji: Water Breathing, Tenth Form, Constant Flux!

Sakonji began to twist around some of the spheres and slashed through the other and it also looks like a water dragon was following him.

Y/n: (Thinking: Now we're talking!) Wind Breathing, Forth Form: Rising Dust Storm.

Just as Sakonji was about to strike him, Y/n made circular slashes facing up word in order to defend himself and it gave him the opportunity to knock Sakonji's sword out of his hand.

Sakonji: (Thinking: Impossible!)

Y/n quickly took off Sakonji's mask.

Y/n: I did it!

He gave Sakonji back his mask.

Sakonji: Great work, Y/n. You are now ready for the final test.

Sakonji took Y/n to another clearing with a boulder.

Sakonji: Split this rock in two, and I'll let you take Final Selection. But this time, you're only allowed to use your sword and breathing forms, no Blood Demon Art.

Y/n: Just stand and watch.

Sakonji stood and watched Y/n take his stance.

Y/n: Total Concentration. Wind Breathing, Tenth Form, Wind Sword Slash!

Y/n slashed the boulder and the slash split into a thousand tiny swords that cut the boulder into a million pieces.

Sakonji: (clapping) You are ready.

Y/n: I'll wait for Tanjiro before taking Final Selection.

Sakonji: If that is what you want. But tell me, where did you learn that technique? I've never heard of a Tenth Form of Wind Breathing.

Y/n: That's because that form was one of my own creation.

Sakonji: You truly are an gifted child.

Y/n: Come on, I want to go check on Nezuko.

They both walked back to the house.

6 mouths later.

Y/n was having tea with Sakonji while they we're listening to the birds.

Y/n: The birds singing sure sounds beautiful today.

Sakonji: I take it you love birds.

Y/n: I do. When I was a child, I would always fall asleep to their songs.

Sakonji: You know, you're last name is one I thought I'd never hear again.

Y/n: I take it you've heard of my family.

Sakonji: I have, they were Elite Demon Slayers after all.

Y/n: Than you must have heard about my father than.

Sakonji: Of course. F/n L/n, right? The very mentioning of his name would be enough to even make the Hashira quiver in fear. But he died along with the rest of the L/n Family 3 years ago, but I thought he only had one son.

Y/n: No, my family had two sons. Me and my brother, B/n who was eleven years older than me.

Sakonji: Even though they found the L/n's bodies, they never found your brother's body.

Y/n: If you're going to ask me why that is, I'm going to go check on Tanjiro!

Y/n stormed out of there and went to Tanjiro who was still struggling with cutting that boulder.

Y/n: Hey, Tanjiro. How's it going?

Tanjiro: I'm so frustrated.

Y/n kneeled down to him and notice that his hands had blisters all over them.

Y/n: I see you've been training hard.

Tanjiro: Not hard enough.

Tanjiro started to run.

Y/n: Well, bye to you too.

Two days later.

Y/n was sitting on a tree watching Tanjiro fail at cutting the boulder.

Tanjiro: I'm about to give up! It's impossible!

Tanjiro headbutted the boulder.

Tanjiro: Come on, Tanjiro! You can do this!

Tanjiro continued to headbutt the boulder.

Y/n: Tanjiro, stop!

???: Silence!

They looked on top of the boulder and saw a boy with peach hair, a white haori over a tunic that had squares on it like Giyu's haori, and a white fox mask with a scare on its right cheek sitting on it with a wooden sword.

Fox mask boy: It's unseemly to whine. So knock it off.

Tanjiro: (Thinking: Who's this guy? He has no scent. And what's the mask?)

Y/n: (Thinking: This guy must be using the same stealth move as old man Urokodaki. I can see him, but I can't feel his presence.)

Fox mask boy: A Demon Slayer bears its suffering in silence.

He stood up.

Fox mask boy: Isn't that what you and your friend want to be?

He jumped off the boulder.

Fox mask boy: Than start acting like it.

The fox mask boy tried to strike Tanjiro with his wooden sword, but Tanjiro blocked it with the helt of his sword which made the fox mask boy kick him to the side.

Fox mask boy: You're slow, weak and immature. That's not what I call it Demon Slayer.

Tanjiro: What do you think you're doing?

Fox mask boy: Trying to figure out what you think you're doing.

Tanjiro: What do you mean? I'm training.

Fox mask boy: How long do you plan to keep sitting on your butt? Take a fighting stance.

Tanjiro stood up and took a fighting stance.

Fox mask boy: Come on, then. Give me your best shot.

Tanjiro: But your sword's made of wood, I could hurt you.

The fox mask boy began to laugh historically.

Y/n: (Thinking: It seems like I finally met someone who's as psychotic as me.)

Fox mask boy: How thoughtful of you. I greatly appreciate your concern. But do you honestly think you'd be capable of giving me a scratch?

The fox mask boy ran at Tanjiro and tried to hit him while Tanjiro tried to block as best as he can.

Fox mask boy: Rest assured, there's nothing to worry about! I'm far more powerful than you are! I've already cut through my boulder and your friend up there had cut his mouths ago!

Tanjiro: So, it is possible?

The fox mask boy started to jump off tree trunks to confuse Tanjiro and he was able to hit him in the back of the head.

Fox mask boy: You obviously haven't learned anything! You haven't mastered any of your training! Especially not Total Concentration Breathing. Didn't Urokodaki teach you?

Tanjiro: (Thinking: He knows Urokodaki? Who is he?)

Fox mask boy: All you've done with your training is memorize the information. Your body still has no clue what it needs to do. What the hell of you been up to for the past year and a half?

The fox mask boy struck down his sword which Tanjiro blocked.

Fox mask boy: All of it has to be hammered into your flesh!

They went into an all out duel.

Fox mask boy: More! More! More! You have to make sure you never forget any of the secrets Urokodaki taught you! Pound it into the marrow of your bones!

Tanjiro: I'm trying! I'm giving it all I've got! Every day! Except I'm not getting anywhere! I can't, I don't think I can do it!

Fox mask boy: You can! If you man up! Don't you want to be Demon Slayer? There's nowhere else to go but forward! Tanjiro! Show me just what you're capable of!

The fox mask boy his Tanjiro in the jaw and Tanjiro pasted out from exhaustion.

Y/n: You're pretty skilled with a sword. Now, who are you?

Fox mask boy: Spare with me and I'll tell you.

Y/n: Okay.

Y/n tried to kick the mask boy who blocked it with his sword.

Fox mask boy: (Thinking: He's fast.)

Y/n than cut the wooden sword in half with his sword.

Y/n: Now, who are you.

Sabito: A deals a deal. My name is Sabito.

Y/n: And that girl behind you?

Sabito turned around and saw a girl with black hair, blue eyes, a white fox mask with blue flowers on its right cheek on the corner of her forehead, and a black haori over a pick flower pattern kimono.

Makomo: My name is Makomo. It's nice to finally speak with you, Y/n.

At nightfall.

Y/n and Makomo stayed with Tanjiro until he woke up.

Makomo: Are you all right?

Tanjiro: Please tell me you both saw that.

Y/n: Do you mean, did we see you get your ass kicked by a guy I defeated in two hits?

Tanjiro: Seriously?! Do you think it could impossible to do what he did?!

Makomo: I'm positive it is... because we'll be there to look after you.

Tanjiro blushed a little.

Tanjiro: (Thinking: She's cute.) I'm sorry, who are you?

Tanjiro: (Monologuing: The girl told me her name was Makomo. And the name of the guy who beat me up was Sabito. Makomo helped guide me by pointing out everything I was doing wrong. She corrected my unnecessary movements and all my bad habits. But when I asked her why she was helping me, and where she came from, she wouldn't say.)

Makomo: Sabito and I we both love Urokodaki very much.

Tanjiro: (Monologuing: She said that a lot, almost like a catchphrase. She and Sabito weren't siblings. They were orphans and Urokodaki raised them.)

Makomo: We're not alone though, there are lots of other children too. They're always watching you, Tanjiro and Y/n.

Tanjiro: (Monologuing: She is cute, but Makomo is a strange girl. Her speech is so abstract and dreamy.)

Y/n: If there are other kids here, how come we've never seen any? And how come you waited until now to talk to us?

Makomo: We're kind of shy. Anyway, with Total Concentration Breathing, your blood circulation accelerates, because you're heart rate is faster than normal. That causes your body temperature to spike as well, allowing a human to fight with the strength of a demon. So, it's crucial to expand your lung capacity. By introducing lots of air into your bloodstream all at once, your blood gets excited, so your bones and muscles start to heat up and grow stronger.

Y/n: And it's how I'm so fast. I focus all of that into my legs and run.

Tanjiro: (Thinking: None of that makes sense.) So, how do I learn that?

Makomo: Train until it kills you. Because really when you get down to it, there's nothing else you can do.

Tanjiro: (Monologuing: So, I trained until my arms and legs wanted to fall off... 'til my heart and lungs were gonna burst, I swung my sword. But still... Sabito kept beating me. Six months later, that changed.)

It was snowing and Tanjiro's hair grew longer, but still a little shorter than Y/n's.

Tanjiro: (Monologuing: Once again, I challenged him to a duel, but this time his sword was real.)

Sabito unshethed his sword.

Sabito: It took you six months, but you look like you finally belong.

Tanjiro: This is the day I win!

Y/n and Makomo were watching the duel.

Tanjiro: (Monologuing: A head to head fight like this is simple. Whoever's stronger and faster comes out on top.)

Tanjiro took a deep breath

Y/n: Ready, begin!

Both Tanjiro and Sabito disappeared from sight.

Tanjiro: (Monologuing: It was all over in an instant. Today, in a fraction of a second, for the first time, my blade struck first.)

Sabito's mask broke and it revealed he had a scar on his right cheek like his mask, and he looked at Tanjiro and Y/n with a sad smile.

Tanjiro: (Monologuing: As soon as I won, Sabito smiled. He looked happy, but also sad. It was a smile of relief.)

Makomo: Tanjiro. You did just great. Never forget about this. You either, Y/n. Keep winning for me, you two. The next one too.

Sabito and Makomo vanished into the mist and where Sabito was standing the boulder that Tanjiro was suppose to slice was split in two.

Tanjiro: (Monologuing: Next thing I knew, Sabito was gone. I was sure what my sword cut through was his mask, but no it was the boulder.)

Y/n walked to Tanjiro.

Y/n: Good job, bud. Now, we can take Final Selection.

Y/n extended his hand towards Tanjiro.

Tanjiro: Yeah.

They both shook hands.
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Preview.

Nezuko pointed out the chopped up rocks.

Tanjiro: Yeah, that surprised me, too. Never thought I could cut through a boulder. Couldn't have without Sabito and Makomo.

Y/n: What about me?

Tanjiro: Come on, you know you helped a lot. I can't thank any of you enough.

Y/n: Well, now we gotta take Final Selection.

Tanjiro: First, it's time for me to reveal a Taisho-era secret! Do you know why Mr. Urokodaki wears a mask? Well, I heard it's because demons used to make fun of his face all the time for looking to soft and kind.

Y/n: But, I'm the only one out of the three of us who has seen his face.

Tanjiro: Hey, Sabito, Makomo, and Mr. Urokodaki! I'm gonna do everything I can to turn Nezuko back into a human.

Y/n: As will I!

Tanjiro: Next time, Chapter 4, "Final Selection"!

To be continued.