I'm also confused..
you're supposed to be confused. Sensei twisted reality with dreams. Basically, during the last time they had sex, Miyamea (or whatever his name is) had stabbed his eye already, it wasn't paint. He had gone insane cause he couldn't paint his pretty Sensei.
what I think is that Sensei was beautiful on the outside but if anyone managed to get close to him then true evil would be unleashed (but sensei didn't know himself, he just had those 'feelings' that something would happen)
huuuuuuuuuuuuuh? but yea...I'm lost also ╮(￣▽￣)╭
but if you look at the other paintings in his room/occult club they are also scary?
I'm so confused.... One second they're having s'x then the next panel said he commited suicide..then the painting.....i dont get it??? Anyone? Help??