Halloween Event Second Half 3N

Operation Happy Halloween (Second half)
Normal Chapter 3
Hero Club room
Su: Let's say the minimum requirement for the costume is that it should be able to scare others.
It: Y-yeah. If that's enough for you, Sumi-chan.
Su: No, this isn't about whether or not it's enough for me. The issue is that we won't receive sweets if we fail to scare the others.
It: Well~, I'm sure Tougou-senpai and the others would give us sweets if we simply said "trick or treat."
Su: If we said "torikku oa toriito"... Does that mean we won't need to wear costumes?
It: N-no, you got it wrong! If we said that to them while wearing costumes it'd be flawless, you understand?
Su: I see... That's the minimum requirement, then.
It: Uhm, yeah, probably...
Su: In the first place, what is even the origin of this "Haloen?" None of this makes sense to me as long as I don't have an understanding of it.
It: Back to square one!? The origin, the origin, huh~... It might have been a way to ward off evil spirits, maybe.
It: To take a Japanese example... Ah, it's like Setsubun! You dress up as an oni, and the beans are like sweets, that has to be it!*
Su: Hmm, that's easy to understand. Are there more similarities?
It: More!? U-uhm... Just like with the oni, the scarier the costume, the better or something.
Su: Then we should make it scary, after all?
It: B-but if it looks too scary, that's bad too. It's enough if it's just scary enough to appeal to their feelings.
Su: Feelings, their feelings, you say... Itsuki-san, has there ever been anything that frightened you to the core?
It: A time when I was frightened to the core... that has to be back when I fought the Vertex for the first time.
Su: ...It might be the same for me. ! That's it, a Vertex!
It: Eh, Sumi-chan, could it be... Do you want to dress up as a Vertex?
Su: Exactly! I will go and fight the Vertex for a bit so that I can create a more faithful recreation of them!
It: Waah! Wait, wait! It's too dangerous to go alone!
Su: Please don't hold me back, Itsuki-san! Show me a samurai's mercy!
It: A sa-...!? I-I got it! I'll come with you! So, could we at least let Hinata-san know about it before we go?
Su: You're right... I understand, I'm sorry. I wanted to strike while the iron is hot, so I acted on impulse...
Hi: ...I don't really get it, but I got it.
It: A-are you sure? Hinata-san, won't you get angry or something?
Hi: I'm somewhat shocked, but I know you will be fine as long as an experienced Hero Club member like you is there, Itsuki-chan. Just make sure not to overdo it.
It: Th-thank you very much! Okay, Sumi-chan, let's get going!
Su: Yes! Thank you very much, Itsuki-san, Hinata-san! Now that I have been given the chance, I shall strike them down with all my might!
Hi: No, as I said, please don't overdo it, you hear...?

*https://en.wikipedia.org/wiki/Setsubun