Yandere's "assertiveness" and scheming is so forced that i might have rolled my eyes out of my skull at this point. MC acting like he has forgotten how to speak while spontaneously losing 50 IQ to make her look smart also doesn't help. She is like one of those characters where in order to make them look smart, author makes everyone else retarded instead. There is not a single reason for him to not just go "fuck off we are not dating" to her on the spot after what she did with the sister. But instead, he is helpless and a mute. For... reasons...