3rd Pov

"Anyway, it's been a while." Replacer Bishop said to Mina."It's nice to see you're still alive."

"Are you really Narae?" Mina said in shock."You...You're still alive? But...Replacer? What do you mean?"

"What? You don't look happy to see me!" RB said in fake sadness.

"I don't think people will say happy, more like surprised," Y/n said.

"You..."

"No!....I....I...Just that day..."Mina said taking her attention.

"You thought I was dead? Yes. That's what I thought for a while too." RB said.

"Hey. I don't know what business you have with the rookie but think about what I said. It'd be in your interest for you to turn back this time." Hilde said."You probably know how you're friend turned out...Replacer Knight, was it? Your chance here to win here is zero to none."

"Is that so?" RB said Y/n is getting into stance."Then, what if I bring some friends?"

As soon as RB said that, Lena's hologram is showing up.

"Corruption ray density is rapidly increasing! Warning! Multiple C.Os clusters detected near the area!"

"So that's how you want to play. Okay, if it's a fight you want, I'll give it to you. Shi Yoon! Take the enemy down before they join up with the others!" Hilde said and was about to jump towards RB but Mina hugs her.

"W-wait! Commander! Don't fight her! She's my friend!"

"What are you doing? Get off me, rookie! That's an order!" Hilde said trying to pry off Mina.

"Mina, Calm down! I know you heard what she just said!" Y/n said attempted to pry Mina off and was successful at doing it.

"B-but! I-I know...we might be able to talk through this...Maybe then..." Mina attempted to reason with me who is holding her shoulder with his right hand.

Y/n Pov

'How should I proceed now!!!!? Originally, I wasn't existing in this story. So, how should I proceed now?'I thought to myself and held Mina's shoulder with my right hand.

"...You're still despicable as ever, Mina." RB said taking my attention to her."People never change, do they? Thanks to you, I finally realize my life purpose. Mina. I'll make sure to kill you with my own hands!" Realizing this, I pushed Mina behind me and draw my sword blocking her hand's claw.

"I remember you...You're the one who destroyed the Replacer Knight."

"Yeah. So?" I said.

"Gotta say I'm impressed you're still alive." RB then kicked me with surprising agility and I barely managed to avoid it.

'so fast! Omicron!'

"Certainly, Master!"

RB then continue to attack me with her claws but I managed to fend them off with Omicron's help then she suddenly going stronger and I block her attack but it sends me off to the ship and crashes to the ground. I then try to stand up and see the ALT squad coming towards me.

"Mr, are you okay!?" Sobin asked me and I nodded and stand up."Thank goodness." She muttered.

"You sure are tough, Mr." Seo Yoon said.

"Yeah, thanks. Okay, I need you guys to eliminate cluster along with Mason,it will be troublesome if they managed to get here." I said to the ALT squad.

"Consider it done, Mr.Come ALT squad! We! Are!" Seo Yoon shouted.

"Strong!" The ALT team responded.

"Come, Mr.Mason!" Seo Yoon said.

"Right!" Mason along with his goons goes with Seo Yoon to eliminate the C.Os cluster. With that, I dashed back to where RB is and found she is struggling to fight against Shi Yoon and Hilde but Mina try to hold them back from fighting RB. Running to her, I hold her shoulder from trying to get her killed.

"Stop, Mina. What are you doing!?" I said to her and she looks at me teary-eyed.

"Y-Y/n.Please!...I...I.." Mina said to me.

"Gaagh!" RB shouted taking our attention and sees Shi Yoon defeating RB.

"You sure are fast....But your patterns are too obvious. Speed is useless when you're so predictable."Shi Yoon said to RB.

"Ugh!...!*pant*pant*"

"Let's wrap this up now, shall we?"

Mina then runs to Shi Yoon and I let her and walk towards them.

"Shi Yoon...Hold on for a second!" Mina shouted.

"........Mina, I understand how you feel but that's not your friend.I don't know exactly how people are transformed into Replacers...But how do you expect how expect her mind to be intact after going something so monstrous? You're friend's identity and free will...They're likely gone or altered significantly at the very least." Shi Yoon said to Mina and I already reached them and standing beside them.

"It's easy to tell really...Unless your friend was always a lunatic bent on killing her friends with an army of C.Os..."

"B-But! B-but still! How you can be so cruel?! I'm sure there's a reason!"

"Well then, let's hear her reason then," I said to Mina and looks at RB.

"......" RB said nothing.

"Enough of this. Save your whining for later, Rookie. We're going to finish this first." Hilde said and brandishing her sword and attempting to slash RB.

"Wait! Commander!!!"

At least what should happen but Hilde was attacked and blocked the attack.

"...Who are you?" Hilde asked but a voice then spoke and I feel my entire body tingling making me more on guard.

"Haha. If I'm going, to be honest, I was hoping you'd be a little rusty." The voice then reveals itself showing Na Yubin without his glasses.

"But then, you wouldn't be my Master. All I did was fling you away and you almost broke my arm! Glad to see you're as strong as ever." Na Yubin said shocking Hilde greatly.

"...Y-you!"Hilde shouted in denial."No...that's not possible..."

"Isn't the moon so bright tonight?" As soon as he said that, I gripped my sword sheath tighter.

"It's a great day for a reunion with old friends. Like you, Mina...and you, Master."

"Na Yubin!!!"

After Hilde shouted his name, Soo Yeon's hologram appears and shouted at him.

"You! What are you doing here!"

"Oh, hey, Soo Yeon. Long time no see. I'd never imagined you'd grow ...so old. I thought you would stay as a kid forever."

"What the hell! You said you'd never come back! Why now?"

"Sorry, but you'll have to wait. There's someone I need to say hello to first." Na Yubin said to Soo Yeon and turns to Hilde."It's nice to see you again, Master. I believe it's the first time we meet each other since the day you abandoned us."

"......"Shi Yoon keeps silent.

".....You....You're still alive too?" Hilde said but hearing it, I want to make a joke but decided against it."Then why...did you wait till now to come back?"

"Who knows...what do you think?"

"I don't have time for your games! Have you come to take revenge?! Fine! If it's a fight you want....You got it! Come at me!"

"Mina, get behind me. This guy is more dangerous than he looks and don't try to argue I need your support." I said to Mina who looks at me and nodded slowly, doing what I say.

"Actually, my business is with that lady." Na Yubin said.

"What lady?" Hilde asked.

"Jisoo. Please go ahead." After Na Yubin said that, a lady with an eyepatch takes RB.

"Ack!...Ugh!"

"Replacer Bishop...Secured."

"Hey!" Mina shouted behind my back taking Na Yubin's attention." what are you doing with my friend? Who the hell are you? Who do you think you are?!"

"Haha. Miss Yoo. Pleased to finally meet you in person. I've been waiting for a long time for you to become ready and It's also nice to meet you in person as well, Mr." Na Yubin said to me as well.

"You've been waiting for me? What kind of bullcrap is that? Just answer my question!!" Mina shouted but I keep quiet and keep gripping my sword handle.

"I'd love to fill you in on the details but unfortunately, I don't have much time today. We'll talk more when you come to visit next time."

"What the hell is that supposed to mean?!!" Mina shouted.

"Mina, Come find us if you want to save your friend. We are located at...Ah, that's right. Let's just say a place where promises were broken. The Master should be able to tell where that is."

"A place where promises were broken?"

"......You...son of a...what the hell are you plotting?" Hilde said

"Haha. I'll be waiting." Na Yubin said then Shi Yoon appears behind him and attacks in front of them making Na Yubin stops."What's this?"

"Get back, Commander." Ji Soo said.

"As they say, you can check in but you can't check out." Shi Yoon said.

"Oh?"

"As much as I'd hate to get involved in your complicated history...Haha, I'm just doing my job. As long as paychecks keep coming, I just gotta do what they tell me. So as I was saying...you'll have to go through me if you want to check out."

"Oh my. Looks like they got someone interesting to replace me. if you insist, I'll suppose I'll humor you. But like I said, my schedule is a little tight today. Ji Soo."

"Yes.Commander."

"I know it's a hassle but please take care of the rest. This will be a good experience for my cute little replacement as well."

"Understood."

"Well, that's rude leaving behind a lady so you can slip out..."Before Shi Yoon can finish his words. Ji Soo is already swinging her sword forcing him to block it.

"Ngh!"

"Sorry, what was that again? I'm afraid I didn't catch that." Ji Soo said sheathing her sword."Care to repeat what you said, boy?"

"Well well well...Thing just got even more interesting." Shi Yoon said before I shouted.

"Hey, Shi Yoon. Need any help?!!!" I shouted making him look at me and Ji Soo.

"Well, if you think you can, why not?" he said before nodding. I nodded and unsheathed my sword and launch light purple energy making her avoid it and it goes through the building and explodes effortlessly.

"Mina, just stays back, you're exhausted," I said before making my sheath acts as a second sword.

Mina looks at me and nodded."Fine."

"Oh, an interesting weapon you got over there, Mr." Na Yubin said.

"Yes. To kill a bunch of pain in the butt like you." I retorted before dashing to Na Yubin.

"Wait! Stop!" Hilde shouted to me but I ignored it. I then swings my sword towards him and Na Yubin dodged to the left making the sword cleave the ground. Seeing this, when my first leg hits the ground. I changed the sword's trajectory and slashed to the left with the sword making a lot of dust.

3rd Pov

"Interesting, I never know you can do something like this, Mr. I must say I'm impressed." Na Yubin said while covering his face from dust. Na Yubin then dodged an attack which create a wind but disappear briefly. The same thing keeps happening but he was to dodge it all."Due apologizes,Mr. But my schedule is busy. So, I'll make this quick." He then swipes his hands destroying the dust clouds and found Y/n nowhere to be seen."Wait, where's he?"

"Here." A voice spoke and a sword is coming his way from his behind. He then tries to dodge it but it was too late before Ji Soo rammed Y/n with her sword making him collide with him and crashed through the building nearby making a double crash.

"Y/n!!" Mina shouted.

"You!!" Hilde shouted and grabs her sword and Shi Yoon did the same.

Hilde then attacks Ji Soo by swinging with great ferocity but Ji Soo dodge them all and manages to counterattack her sending her away before Shi Yoon comes from behind her and swings his large sword sending Ji Soo away and Mina supported them with her rifle.

Although all of them fought, Hilde is actually exhausted from her fight with RB along with everybody else. Ji Soo handily defeats each of them. Then, Ji Soo uses her power to dash and swings her sword at Hilde but a giant mechanical hand then appears punching her by surprise and shocking everyone.

"What?!!" Everybody shouted their surprise and looks where the hands come from and found they came from where Y/n crashed.

"Now now, let's not be hasty and try not to get caught up in every single thing." Y/n said before walking outside with no scratch."And please don't try to hurt my colleague,Mr. Na Yubin." Y/n said calmly before retracting his giant mechanical hands and looking at him.

Earlier

'Ow.dang it. I got caught off guard.' Y/n thought.'I guess I shouldn't slack off on training.Ow.'

"Initiating auto-recovery...Complete.'

'I guess I can't use my sword because I'm not on equal grounds with them. I guess time to use my power. Good grief, my secrets will be out later or not.' Y/n thought before storing his sword in his sub-space.

Present

"Now, Mr. Time for Round 2," Y/n said before both of his hands glowed blue neon lines.

A/N: There! New Chapter added! Alas, as usual, constructive criticism is appreciated to improve this writing and make it more fun! Adios!