The members of the Kingdom of Science all waited for Suika to return from her reconnaissance. 

Ruby: WHAT IF SHE GOT CAUGHT?! 

Senku: No way, Suika's smart enough not to let herself get caught. 

Ruby: BUT WHAT IF SHE DID?! THE POOR GIRL! 

Blake: Wait! 

Blake listened in and her cat ears twitched. 

Blake: She's coming! 

Suika was rolling back in her melon helmet. 

(Y/N): SUIKA! 

Suika: BAD NEWS! BAD NEWS! 

(Y/N): What is it? 

Suika: Gen said on his way to lie to that Tsukasa guy, he was attacked by Magma! 

(Y/N): Wait, who's he? 

Yang: That asshole who Gen used the magic flower trick on. 

(Y/N): Oh fuck, that idiot. 

Flashback... 

Magma: HAHAHAHAHAHAHAHA! Even that sorcerer crumpled like a helpless baby! 

Magma and his sidekick Mantle were feasting on meat. 

Mantle: You said it! You're amazing, Magma! 

Magma: Of course I am! It would be better to get rid of Kohaku, but she's too tough. 

Mantle: Yeah, but she's built differently. A real gorilla. 

Magma: True, but she's just defenseless without her little friends to help her. Maybe if she gets on her knees and begs for me, I'll let her become my girl along with Ruri. 

Mantle: HA! Nice! Is there anything you can't do, Magma? 

Suika listened in. 

Suika: Oh no! I have to tell them quickly! 

Present... 

Ruby: I do not like that guy. 

Kohaku: Magma really jumped to conclusions based on what Gen's trick was. 

Weiss: He jumped to conclusions. He thought he was Senku. 

Chrome: Wait, you mean Magma mistook Gen for Senku and attacked him? 

Senku: HAHAHAHAHAHAHAHAHAHAHAHAHA! 

Ruby: SENKU! Gen could have died! 

Senku: YOU KIDDING?! THERE'S A TEN BILLION PERCENT CHANCE WE LOOK NOTHING ALIKE! 

Ruby: Poor Gen. 

Yang: Even if that guy is a total weirdo, that bastard Magma is going to pay! 

Chrome: Eh, he'll be fine. Gen's a smart guy. He'd fool his way out of anything. 

Sci-Twi: But why would Magma want to kill you, Kohaku? What did you do to upset him? 

Kohaku: it's because of the Grand Bout. 

(Y/N): The what? 

Kohaku: Once per generation, we've held a martial arts tournament called the Grand Bout. A few months ago, Ruri turned 18. Whoever wins the bout will win her hand in marriage and become the new Chief. That's how my father became chief, years ago. 

Flashback... 

Magma was winning easily against his opponents! 

Magma: Sorry if I didn't bother nursing you back to health. You can just hurry up and die. Leaving me with the chief's throne! Or even better, lose the will to live even sooner and throw yourself off a cliff! 

Kohaku: YOU PIECE OF SHIT! 

Kohaku punched Magma and beat him until he was bloodied and unconscious! 

Kohaku: I WILL NEVER LET YOU TOUCH MY SISTER!!! 

Jasper: And with that Kohaku wins! 

Kokuyo: WHAT?! 

Kokuyo angrily crushed his cup. 

Turquoise: Great, now who's going to marry Lady Ruri? 

End of flashback... 

(Y/N): And your Dad disinherited you because of that? 

Kohaku: I guess that was the straw that broke the camel's back ... that's what you say right? 

Yang: Heh, you're using the slang I've taught you! Nice one, Sister! 

Chrome: Yeah, Kohaku's always been a wild child. A total go- 

(Y/N): Chrome, finish that sentence, I dare you! 

You glared at him with Conqueror's Haki! 

Chrome: Uh ... gorgeous, wonderful cutie? 

(Y/N): Thank you. Anyway, I don't want Magma becoming chief. 

Ruby: I know! We can't make Ruri's cure with him around! 

Senku: Yeah, it would also be a problem recruiting everyone else. But if someone wins the Grand Bout, then he'll become the chief and marry Ruri. 

You whispered to Kohaku, and she and Blake went to go and talk to Kinro and Ginro. 

Blake: Kinro, Ginro. 

Kinro: What is it this time? 

Kohaku: What do you think of Ruri? 

Ginro: HUH?! (blushing hard) I mean ... she's a nice girl ... and really cute. I mean she's got those boobs, and she's so ladylike and- 

Ginro was steaming! 

Kinro: Well, she's more than looks. She's a sweetheart. Ginro, stop being perverted. 

Ginro: Oh come on! Boobs are a gift from the gods to women! 

Kinro: Guards don't engange in discussion, but if we're just chatting, it's not breaking the rules. What's our goal? 

Blake: You mean- 

Kinro: Yes, you're not bad people. I understand it. 

Blake: So, then can you help us? We need to save Ruri. Join us. 

Kinro and Ginro: YES! 

Blake and Kohaku: Th-That easily? 

Soon... 

Team RWBY were training Kinro and Ginro to fight! 

Weiss: Too slow! How are you going to face a warrior like Magma if you can't beat us! 

Weiss knocked Kinro down as Yang knocked Ginro out! 

(Y/N): Chrome! Why don't you join us? 

Chrome was in his hut. 

(Y/N): Ruri's your friend too. Aren't you going to participate in teh Grand Bout? 

Senku: No that's not it, he's in love with her. 

(Y/N): Oh, really? 

Chrome: I ... well- 

He blushed hard. 

Sci-Twi: If you care about her that much, then go for it. 

Chrome: If she can live on happily, that's good enough for me. I want the woman I love to find someone good enough for her. That's why I'll do my part as a scientist! 

Senku: Not a sorcerer huh? 

Chrome: Not anymore! 

Senku: Good, (Y/N), you should get ready. 

(Y/N): I know. The fighters will handle the tournament. And you three will do science. 

Senku: Yep! Get excited! 

Sci-Twi: So, what's our next goal, Senku? 

Senku: If we're going to build civilization, we need something as important as Iron. Glass! 

Sci-Twi: Yes, we need- 

Chrome: What's glass? 

Sci-Twi: (facepalm) Of course, you don't know what that is. Look, on the path of sulfonamides, all the earthenware in the world won't help for the chemistry experiments. Glass can stand up to most chemicals. 

Senku: All facts from our female genius. Besides, we can also pop that obnoxious helmet off of Suika. 

Suika: SAY WHAT?! 

(Y/N): SENKU! I HEARD TH- AGH! 

Senku removed Suika's helmet! 

Chrome: WHAT THE HELL?! 

Kohaku: SENKU! SUIKA DOESN'T WANT ANYONE SEEING HER FACE! 

Senku: Hey, there are no scars or anything. Shel ooks normal. 

(Y/N): OH MY GOD! SHE LOOKS SO- 

Team RWBY and Kohaku: (heart eyes) SO CUTE!!!!!!!! 

But then her face scrunched up. 

Team (Y/N): AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAGH! 

Suika: Sorry, my eyes got the fuzzy disease. Everything looks so blurry. I try hard to see ... it's just embarassing to squint. The watermelon mask lets me see things better. 

Sci-Twi: Hmm ... this is- Senku, are you thinking what I'm thinking? 

Senku: If you mean the pinhole effect, then yes. 

Ruby: What's that? 

Sci-Twi: Well ... peeking through little holes narrows the stream of light, an that reduces the degree of fuziness. 

Chrome: So there's a connection between Suika's fuzzy disease and glass then? 

Senku: A TEN BILLION PERCENT CONNECTION! 

(Y/N): Oh I get it! Sukia, you're just near-sighted! You're fine! 

Suika: I ... am? 

(Y/N): Guys! We need glasses stat! 

Suika: What are glasses, Big Brother? 

(Y/N): They are scientific eyes crafted from glass. They help those who have trouble seeing ... see. 

Ruby: All she wants is to see the world normally! 

Suika: (crying) Yes ... all I want is to see you guys ... even if it's only one time. 

Sci-Twi: Alright, let's get to work on some glass! 

Kohaku: What do we need? 

Senku: The main ingredient is silica sand. 

(Y/N): Yep yep, guess what Chrome we need to add someting to your baaad collection! 

Chrome: Why the hell would I go and gather sand? 

Ruby: (wearing glasses) FOR SCIENCE! 

Senku: Ruby, why the glasses? 

Ruby: Because I look smart like that. 

Senku: That is ten billion percent accurate ... an assumption, but it's accurate. 

And so... 

You all went mining. 

Chrome: I was right around here where I found these cool see-through rocks when I was a kid. 

Senku: That's worth its weight in gold. If you found crystals her, that means the granites been weathered away. 

Sci-Twi: Yes, it's exposed bedrock. 

(Y/N): So, the raw material for glass is here? 

Senku: Yep. Silica sand. 

Yang: These little guys break off easily! 

Suika: I'm having fun! 

Ruby: Careful with that pickaxe, Suika! 

Sci-Twi: All we got to do is gather them up, and crush them to make sand. 

Kohaku crushed them after gathering so many of them. 

Chrome: Anything else? 

Senku: No, we pretty much have everything. 

You put them inside of the forge. 

(Y/N): Now we need some lead. 

A bit later... 

Senku: And we have glass! 

You pulled out a glass lens. 

Chrome: OOOH! 

Weiss: We made a lightbulb, and now we made glass. Step by step, we're bringing modernization to this primitive earth. 

Ruby: It's so beautiful! 

Suika: It looks like ice, and you can see through it! 

(Y/N): Hey, do you girls think you can keep training Kinro and Ginro? 

Team RWBY and Kohaku: Yeah! 

They went back to training the two guards. 

While that was happening, Senku, Sci-Twi, and Chrome were grinding the glass down to make it just right. 

(Y/N): All set? 

Scientists: Ten billion percent. 

(Y/N): Okay! 

You checked Suika's eyes, and noticed they were perfect for her melon helmet. 

(Y/N): Suika, come with me. 

You brought Suika to a field of sunflowers. 

(Y/N): Now- 

You put the helmet on her head. 

(Y/N): What do you see? 

Suika: It's a sunflower! 

(Y/N): Not just that, but a bunch of sunflowers! 

She looked across the entire field! 

Suika: (crying) Big ... Brother. 

She hugged your leg, and you just pat her on the head. 

(Y/N): There, there, it's okay. 

At the same time... 

Kinro and Ginro were taking a break. 

Ginro: Shouldn't we tell them Kinro? You got the same fuzzy disease that Suika had. It's because of that you look so sour. 

Kinro: No, I've always been like this. 

Ginro: I don't get the point of it. If I were you, I'd just say something. "It's just my eyes" or "I'm stronger than I- 

Kinro: A real man makes no excuses. That's what Yang said. 

Much later... 

Senku: HEHEHEHE! Alright, time for a super fun glass crafting seminar! 

Sci-Twi: Let's get to work! 

Sci-Twi was pouring in obsidian. 

Suika: Big Sis Suika, what's this white bubbly stuff? 

Sci-Twi: That's foam, when you heat obsidian, that forms. It'll serve as thermal insulation for our glass crafting kiln. 

Senku: After that, we take an iron tube and blow through it to inflate the glass. 

Chrome stuck a tube through the obsidian and blew into it! 

And then... 

Ruby: That looks ... really- 

Weiss: Lame. 

Blake: Well, it's a start. 

Senku: Yeah, it took me a while to get the earthenware too. 

Chrome: We don't have much time!

Kohaku: I don't think Ruri can hold out for motnths. 

(Y/N): Well we're not glass artisans. We need help. 

Chrome: Hold on! 

Chrome took off. 

Ruby: What's Chrome up to now? 

Sci-Twi: I think he knows someone who can help. 

Chrome returned carrying Kaseki. 

Kaseki: CHROME! LET ME GO! 

Chrome: Come on, Old Man! You got to help us! You're one of the best crafters around! 

Kaseki: Getting kinky with rope is how you ask for a favor? I'm not interested in black arts! 

Suika: Sorry, Old Man Kaseki, I forgot to return the lacquer I borrowed. 

Kaseki: Oh, thank you, Suika. 

Ruby: Wait ... Kohaku, he made your shield? 

Sci-Twi: And without iron tools or dyes?! 

Kaeki: Yep. It was for Kokuyo, Kohaku's father. I gave it to him back when he won the Grand Bout. I've got fond memories of those days. 

Senku: That's some impressive handiwork for an uncivilized society. But I was hoping to find a skilled artisan, didn't expect a geezer. 

(Y/N): Did you make the bridge too, Old Timer? 

Kaseki: Yeah, so don't go stripping planks off it! WHA?! What is this see-through masonry? 

He saw the glass. 

Sci-Twi: Uh ... we made it. But, this should- 

Senku: Watch, because it's time to get excited! 

Senku, Sci-Twi, and Chrome went through the same process, and- 

Kaseki: HEY! Spinning at uneven ends like that isn't going to produce a workable vessel! LET A MASTER HANDLE THIS! 

He broke free and revealed his real body! 

(Y/N): WHOA! 

Weiss: At that age?! 

Sci-Twi: I ... uh ... uh ... 

Yang: 

https://youtu.be/Rr4Q879oJm0

Old Timer looks good. 

Blake: Seriously, Yang? 

Yang: HAHAHAHAHAHA! 

Kaseki took a blow into the glass and inflated it right! 

Then he beat on it to make an opening and had Suika pour water! 

Nex,t he used tweezers to squeeze the hole an dextend it to make a bottle! 

Ruby: WOW! Old Man Kaseki is amazing! 

Chrome: Is this really the first time I've seen him work?! 

Senku: Man, he's pretty good at craftsmanship. 

Kaseki: I've been doing this for 50 years now. 

Yang: Geez, how old are you? 

Soon... 

With Kaseki's help, you guys built a chemistry lab. 

Sci-Twi: All done! 

Senku was getting teary-eyed as he remembered when his dad gave him a lab for his birthday. 

(Y/N): Senku? You okay buddy? 

Senku: It's a thing of beauty. This is the dawn oc fhmistry. The ball's really rolling now! We've got the Kingdom of Science! 

(Y/N): A work of beauty. For sure. 

Kinro and Ginro noticed it. 

Ginro: Hey Kinro, what if the tip of your spear was all shiny? Even you, with your fuzzy disease, might be able to judge distance better. 

Kinro: What are you getting at, Ginro? 

Ginro: You know, Gold and Silver Spears! We could really use those after all! 

Both brothers gave a bro handshake! 

Then they raced to the lab. 

Sci-Twi: Really? 

Ginro: COME ON! PLEASE?! With a lab like this, cooking up some spears for us should be no sweat! 

Senku: Well, we have glassware, so it's finally time to clear the biggest hurdle on our road to panacea. 

Sci-Twi: I guess we'll make a silver spear for you Ginro. 

Ginro: YEEEEEEEEEEEEEEEEEEEEEEEEEEEEESSSSSSSSSSSSSSSSS! IN YOUR FACE, KINRO! 

Senku: Also, you should know, you're headed for a ridiculously dangerous place. Where one wrong move means instant death. 

Ruby: Hey, Senku, you're getting really sweaty. 

Later... 

Ginro: YES! MY SPEAR IS SILVER! SCI-TWI! SENKU! THANK YOU BOTH SO MUCH!!! 

Senku: Alright, let's get going. We'll need your help on this job. 

(Y/N): We're heading out then! Ginro, time to put your skills to the test.