for me overall this manga is great. every characters are so flawed, but that's what so good about this, the author purposely made a story with a bunch weak and flawed people. Giving us a peek on when a weak willed person(Sensei) get manipulated by the stronger but wretched person (Hayafuji) and sees how she struggled oh so hopelessly to be freed. Is it too dramatic? it is 'drama', but what can we say? Assume that everyone supposed to be strong and assume that sensei has to have the power to overcome her trauma instantly like a healthy normal person supposed to be? People made stupid mistakes that makes you face palming all the time irl. so this amount of stupidity is bound to happen, which is very expected.
Nah this is good. I love to see people fell into despair and struggling even though they don't even have the power to do so.