Why everyone in this manga is ok with whatever crazy shit other people do? Yui has mental issues and dangerous, and it's not even jealous. She stabs this girl, but the only reaction she gets is... smile? "I'll protect you, nothing wrong. Yeah, now you can go and stab other people too". But well, after blonde agreed to fuck with that boy to "protect Yui" I guess she's not quite right in the head too. Anyway, after this dumb sex episode it's pretty hard to take this manga seriously