Will most likely have the usual three deaths

First he dies

(I'm sorry to best boy)

Then she dies

Ok but I see Kokomi as the killer to Miho BUT! Her killer tricks her. Has to be very smart in order to manipulate the strings in the back for this kill. That's right!

The killer of Chapter three will be him!

So basically he has Kokomi kill Miho but he kills Kokomi.

My prediction:

Victim #1: Miho Juzutsi - Ultimate Roleplayer

Victim #2 and Blacken#1: Kokomi Shumai - Ultimate Exorcist

Blacken #2: Akiara Hokori - Ultimate Nerd

(Keep in mind that this is my opinion)