I don't think he's going to betray him. It seems to me that he's trying just to put on an act in order to set Sagawa up. So in order to make his plan work he decided to actually let Nirasawa get caught, even if he's going to suffer a little. These guys have always been the "No pain, no gain" types anyway. I like Kouki a lot, it would be a shame to actually be a traitor. ╥﹏╥
you will be very sad and disapointed （￣へ￣）
Well I liked Kouki too but I don't like anyone to treat or use poor Nirasawa like that. (╬￣皿￣)凸
Kouki please don't betray Nirasawa! Kabu kill those bastards who took Nirasawa!! Btw thanks for the update but I really need more.