Looked also and seems like the math teacher might only be just a strictass but genuinly cares for education.
Let's hope he we catch the real dad and beat him
It's the other teacher, you can see it on the latest chapter
it's litteraly written in the last pages of the last chapter
I still have not figured out how to tweak notifications on this site yet but seeing this again in my notifs on how this one post is getting another comment about who the actual villain is of the story, I figured I should mention OP made the original post BEFORE we got the reveal in the recent chapters posted here on mangago.
ah ok soz about that
all good, we're all here together wanting to castrate that bastard Asakura (๑•ㅂ•)و✧
YALL I DONT THINK ITS THE MEANY MATH SENSEI. I looked up the mangaka name on twitter and found some links to the manga on pixie and and there is another sensei who looks more evil and fucked up and he being real creepy and stalker-y I think that one is the dad. Not the many one,