[1] She's talking about chuunibyou, the kanji for which (中二病) mean "middle school second-year syndrome" when read literally.
Scene: The gates to St. Theresa's School for Girls.
The morning after the rampage and subsequent destruction of the BFF X. The members of the BFFs Club met each other at the gates just as usual on their way to school.
Chelle
Yuni, Chloe, oh, and Yuuki too, chell morning!
Chloe
I thought the "chell" part came second. Morning.
Yuuki
1. "Good morning."
Yuni
Good morning, ladies and gentlemen. This is your guild master, Yuni, speaking.
Chloe
That's rare... Funny to see Yuni up so early.
Chelle
Eh, yeah, Yuni, you've gotten all of your classes waived, so why are you here? Coming all the way to the new schoolhouse first thing in the morning.
Yuni
Hm, it's true that ordinarily, daybreak would be the time for me to retire to bed. However, I was curious about the state of things after yesterday's matter, so I came to reconnoiter.
Chelle
Well, I guess I understand... The schoolhouse went up in flames, after all... We all went back to our dorms as if we were running away. Also known as playing dumb.
Yuni
Don't make it sound so negative. We just took up Miss Akino and the others' offer to allow their Foundation to handle the aftermath.
Chloe
And afterwards, we were supposed to do an on-site inspection, or an investigation, or whatever... But then, you suddenly remembered some errands you had to do.
Yuni
Actually, according to my notes, you were the one who suddenly remembered your errands, Chloe. Meanwhile, I was the one who suddenly came down with a fever, and Chelle is the one who suddenly remembered she had crepes on the stove.
Chloe
Wait, what, crepes. Can't you at least come up with a better white lie than that. Excuses are supposed to make the other person actually feel guilty.
Chelle
Yeah, I guess... But, like, the school had just been burned down... I just ran away after that. Also known as fleeing the scene of the crime.
Yuni
Don't make it sound so negative. After all, none of what happened was our fault. We were in fact the victims of intellectual property theft.
Chloe
I'd say we were even heroes, since we saved the school from danger.
Yuni
Yes, if we hadn't stopped the BFF X, there would have been no end to the victims in the school.
Chelle
I wonder if the teachers will go "Oh, of course!" when we say that.
Chloe
If they were going to, then we wouldn't have had to run yesterday...
Yuni
In a religious boarding school such as this, we who are branded as nonconformists certainly have it difficult.
Chelle
Also known as, our usual behavior.
Yuni
In the criminal investigation that should be happening about now, I wonder if the BFF X's uncommon and repeated war cry of "chelluun" has come up.
Chelle
Eh, am I gonna be a suspect? If that happens, I'm gonna say right away that Chloe told me to do it.
Chloe
No, I think Yuni's the one who seems like the creator of that piece of junk. You'd better fess up, doc.
Yuni
Look here, it seems that you two learned nothing from yesterday's bonus special course lecture. Could you have already forgotten the deep bonds between us that were affirmed by our "BFF Proclamation?"
Yuni
We members of Yunichan's are partners in destiny. If one of us commits a crime, then we must all collectively do the time.
Chelle
Yuni, you're using your authority as our upperclassman to make us shoulder the blame for your own deeds. What a black guild.
Chloe
I'd go with "dark" instead of "black." Dark Yunichan's.
Chloe
Dark... Yunichan's...!?
Chelle
Wait, Chloe! You can't let yourself be tempted! Decorate your vocabulary all you want, but Yunichan's is Yunichan's!
Chloe
Ahh, right... That was close, I almost got taken in by Yuni.
Yuni
Heh heh... Behold, all the world will soon be taken in by Yuni...!
Chelle walks off.
Yuni
Hey, wait. What do you mean "taken in" -- how rude. In fact, my soul is already onto a different stage. One could call it Yuni-scension, or perhaps Yuni-fication.
Chloe
Huh, sure, whatever...
Chloe walks off.
Yuni
Heh heh... Behold, all the world will soon be Yuni-fied...!
Chelle
Yuni? What're you doing -- we're going already, okay?
Yuni
Ah, wait, wait... Don't go without me!
Scene: The courtyard in St. Theresa's School for Girls.
BFFs Club
......
Chelle
Eh, it's normal. The schoolhouse is super normal.
Yuni
Yes, it doesn't have a scratch on it.
Chloe
Huh? What's going on. What were we seeing yesterday, then.
Yuuki
1. "A dream?"
2. "An illusion?"
Option 1.
Yuni
A dream... Hm, that is an interesting explanation. For all of us who were in this place yesterday to have had the same dream -- that means we must have been linked by some kind of collective unconsciousness.
Yuni
And then, the intelligence we accumulated within the dream manifested itself as false memories within each of us. I see... That certainly seems possible, Comrade Yuuki.
Option 2.
Yuni
So it was an illusion... Hm, that is an interesting explanation. Certainly, one theory I've encountered before is that this entire world is some sort of simulation, managed by some higher being...
Yuni
No, never mind, pardon my rudeness. This matter has already been settled. In truth, these teachings that I consider so essential are nothing groundbreaking. They would be worthless to my adorable underclassmen, throughout the course of our chelly daily lives.
End of branches.
Chloe
I've noticed, Yuni sometimes starts talking about spiritual stuff like gods and universes.
Chelle
You think the spiritual stuff might be because of that thing? You know, the thing that happens to impressionable kids, when they're in like their second year of middle school. Where they use words like "daybreak" instead of "dawn." [1]
Chloe
Eh. I guess it happens. Well, it's fine. Everyone's got their hobbies. Like how you're never gonna quit it with the Chellese.
Chelle
Uh, yeah, but nobody was talking about that.
Chloe
... Sorry, got sidetracked. Forget it. Just my paranoia.
Akino
Ahhh ha ha! Good day, St. Theresa's School for Girls (BFFs Club)!
Chloe
Ah, it's the lively girl. Morning.
Akino
Good morning to you too. It seems there's little I can say to apologize for the trouble our little test run caused you yesterday, ah ha ha ha!
Chelle
... Was that line meant to get laughs?
Yuni
With no malice at all, too. Just like a celeb, laughing as easily as breathing.
Chloe
The lively girl really is lively.
Yuni
What's going on today, Miss Akino, being here so early in the morning... No, never mind. That's just the same as me, making use of all hours of the day... Could you have been working all night since yesterday?
Akino
Yes, of course! I was taking the responsibility of supervising things all the way to the end! Thanks to that, my mood is at a bit of a "natural high" right now, ah ha ha ha!
Chloe
Is that right.
Chelle
She seems a bit different than usual, though I don't know why.
Yuni
Hm, supervising, you said. Miss Akino, could that mean that the schoolhouse's perfect repairs are...
Akino
Yes, the Mercurius Foundation hired the finest architects and the finest construction sorcerers, and completed the repairs all in one night!
Chloe
Seriously. Rich people are insane.
Chelle
If you spend enough money, you can fix anything in one night, huh. I can see our moral fabric coming apart before my eyes.
Yuni
No, even supposing that she can stage a human-wave attack by spending fortunes, the need to direct their movements and ensure their reliability, the efficient gathering and transport of building materials, and the coordination of all of these moving parts requires remarkable skill in management.
Chelle
You Mercuries are amazing! You're not just a bunch of sister figures sitting around after all!
Yuni
Yes, never again can we call them the Chellcurius Foundation.
Chloe
Nice. As expected of the dragonslayer-employing Mifuyurius Foundation.
Yuni
Hmm, speaking of Mifuyu and the others... It seems that I can't see any other workers around?
Akino
Yes, once everyone was done with their work, I told them to go on home first.
Akino
As the guild master, or rather, as the head instructor of the special course, I felt that I needed to apologize, so I remained here.
Yuuki
1. "Does the instructor need to apologize?"
Akino
Yes. The special course, and the chain of riotous events that it led to... All have been wiped clean.
Chloe
Huh?
Akino
I am truly sorry. I thought that if we just put together all of the ideas that you presented to us, we would have a truly revolutionary project on our hands, but...
Akino
Without ever conferring with the inventors themselves, we were unable to deliver, and things turned out this way.
Akino
As so-called adults, we are worthy of scorn. While calling ourselves special course instructors and telling ourselves that the ends justified the means, we betrayed you and left you to deal with the fallout.
Chloe
No, well, I mean...
Chelle
It's kind of true...
Yuni
It most likely is. Or to express things more concisely, why'd you do that.
Yuuki
1. "Nothing out of the ordinary."
Akino
... Is it?
Chloe
Well, I mean, we didn't really care anyway... Honestly, the moment our presentations were over, we were ready to forget all about business, investments, and all that stuff.
Chelle
Yep. To be even more honest, all the ideas we came up with were totally chelled in the head to begin with. Ah, that Chellese just now was misused. Please don't copy me.
Yuni
And now that I think more calmly about it, the bonus for successfully completing the course would all have been invested into the business anyway. It was never any kind of get-rich-quick scheme.
Yuni
Even if we had secure massive loans for founding a revolutionary business, we would then have been faced with an endless amount of business administration in order to ensure continuous profits.
Chloe
Right, that. I hadn't been thinking about it at first, but 100% that.
Akino
You all... I'd thought that that was obvious, but... Ha ha, in that case, so that we might sleep better at night, could I ask you to tell me some white lies?
Chloe
Ah, sure, let's hear it.
Yuni
Our vision had been impaired by the dazzle of wealth, and it was important for us to be snapped out of that reverie.
Chelle
It sure was a nice reverie though, nya...
Akino
T-Then... Will you forgive us...? For our adult sin of undermining your pure education...
Chloe
Sure, that's totally fine, but wasn't your sin more the part when you destroyed the schoolhouse?
Chelle
I mean, when we heard about the special course, the thought of obtaining a pure education wasn't exactly top of our list.
Yuni
And you're calling it an adult sin, but you're practically the same age as us, Miss Akino.
Yuni
Yes, I forgive you, sameclassman. And now, I pray that we can be bound by a vow of friendly relations. Or to express things more concisely, let's be friends from now on. I may be a shut-in, but even I wouldn't mind dropping by Lucent Academy every so often.
Akino
L-Lucent... This must be some sort of jewel that I'm unfamiliar with.
Yuni
However, allow me to tell you this, our teacher. The lessons we learned in the special course are within us even now. Compared to that, the outcomes and results of the course are not so important... That is what I personally believe.
Chloe
Yeah, I can see that. Well, not like I think we learned anything huge in the course, either, but there were definitely moments were I was like, yeah, that makes sense.
Chloe
So. I think I'm kinda glad I took you girls' course. ... Though I'm not sure.
Chelle
I had a chelly chelly fun time, so it's all good to me! Chelluun!
Akino
All of you...!
Akino
Hearing you all say these things, even if they were lies, they would still make me happy. As for me, I think the most important thing I gained from all this was...
Akino
Meeting all of you wonderful people.
Students
Whooooo!!
Chloe
Pya!?
Student 1
Wonderful! What a wonderful scene, BFFs Club!
Chloe
Huh? Wait, what's going on all of a sudden... Eh, when did this audience gather out of nowhere.
Chelle
Well, class is about to start, so there were a whole bunch of girls here on their way to school.
Yuni
Hm, everyone, I see you're all secretly listening in on our conversation. As expected of the school we attend, despite our contravention of established school customs, we're all well-mannered girls here.
Student 2
BFFs Club members! I witnessed your battle yesterday!
Student 3
BFFs Club! Thank you for protecting our school!
Chloe
Eh... All this applause and praise is really weird. It's seriously shocking, but moving, but also kind of embarrassing.
Yuni
Agreed. While the concepts of anxiety and bashfulness are largely foreign to me, even I find myself experiencing them in response to being viewed by the masses.
Chelle
Thank you, thank you, much obliged! But don't be afraid to praise us even more! Chelluun!
Chloe
She's the only one who can adjust fast enough.
Teacher
Be silent!!
Chelle
Wah, teacher!?
Teacher
Classes have already begun. Don't dawdle out here, hurry to your classrooms.
Chelle
Yeah, my bad...
Teacher
... That is what I ought to be saying, but perhaps I will overlook your behavior for today.
Chelle
Eh?
Teacher
I overheard your conversation, members of the BFFs Club. Through one way or another, your bonds of friendship rescued this school from grave danger. It's a difficult to believe tale, but if it is true, then the principal will surely be pleased.
Chelle
Ah, really? Then we'll definitely pass the scholarship review with flying colors!
Teacher
That's one thing, and this is different. I think it's a shame, but that's what the principal said.
Chloe
The principal talks surprisingly casually.
Teacher
However, well, I'll be sure to add this to your achievements. You did well, Chelle, Chloe, Yuni. And...
Teacher
And you, transfer student from Lucent Academy.
Chloe
Yuuki. Looks like Mother Hilda still hasn't memorized your name.
Chelle
With all that said! Let's recognize today's teachers! Everyone, let's get all chelled up!
Chelle
Three, two, one! BFFs Club! BFFs Club!
All Students
BFFs Club! BFFs Club!
Yuni
Ohh, the spectators are all responding to Chelle's incitements.
Chloe
Whoa, strict... I didn't know our school had these kinds of vibes.
Akino
This is a parade to recognize our saviors, after all. In that light, it's only natural for the people to want to hear the voices of their heroes.
Chelle
That's right, so c'mon Yuni and Chloe, all together! On three! BFFs Club! BFFs Club!
Chloe
N-No way, I'm not gonna. Right, Yuni. I mean, if we go along with this youthful stuff, we're gonna be doing a naked chell-chell dance on Yukari's barrier before we...
Yuni
Ahh, sounds fun! I wanna enjoy my youth too!
Chloe
Oh, that's right... This girl gets chelly in the head sometimes...
All Students
BFFs Club! BFFs Club!
Yuni
Yunichan's! Yeah, Yunichan's!
Akino
Now, Chloe, everyone is waiting for you, aren't they? It would be better to accept your position about now, wouldn't it?
Chelle
Come on, come on, Chloe! Make the most of your limited youth and let yourself get chellied away!
Yuni
Yes, Chloe! A chelly head befits this twisted world perfectly!
Chloe
Pfff... Whatever.
Chloe
I mean... I guess it wouldn't be that bad.
Akino
Now then, everyone at school, students and teachers alike, all together! Let's get ready for a BFF Proclamation! Three, two, one!
Everyone
What's the BFFs Club!?
Yuuki
1. "It's all BFFs!"
The repairs necessitated by the Mercurius Foundation's special course were all complete. Having overcome this adversity, the BFFs Club's bonds ran as deep as ever. And their prime, youthful school days continued on, bouncing from one thing to the next.