I really don't know how Touya can stand to see Kamio and Kou making out in front of him. I would have gone crazy! So now I'm happy if the one getting jealous is Kou ╮( ̄▽ ̄)╭
Touya puts up with it (barely) because he has to. It'll be really bad if Kamio loses control and he needs to "make out" with (eat) Koichi in order to keep his sanity. It will be nice to see Koichi getting jealous for a change though. (▰˘◡˘▰)
I really don't know how Touya can stand to see Kamio and Kou making out in front of him. I would have gone crazy! So now I'm happy if the one getting jealous is Kou ╮( ̄▽ ̄)╭