tl;dr: A manga that is pretty generic yet still has some greatly amusing aspects, but has major issues that prevent it from being all that enjoyable.

This manga is bizarre. It could have been a semi-decent, albeit generic, harem rom-com. The core premise of a teacher trying to stay true to his love for another teacher while helping other students who fall in love with him so he has to fend off their advances is decent. But the implementation is horrible.

The first major issue is all of the things he has to help them with stem from other teachers essentially molesting them and that's supposed to be funny. If he manages to stop them before they went too far and then afterwards they went to jail that could be reasonably amusing. But rather the teachers manage to get away with quite a lot before they get stopped , far too much for me to think of it as funny at the least. And upon getting stopped, they don't go to jail. They don't even get fired. They just continue doing what they're doing in a different way. And later they're even portrayed as good people. I just found all of this too gross for what is supposed to be a comedic manga. The other issue is that the protagonist is pretty useless, and doesn't even really do much in the various situations where he's supposedly the one that stops the villains and saves the girls, so it all really feels kind of lame.

Because of those two issues, even though there are a good amount of comedic and fluff filled portions that just have the protagonist interacting with the heroines that were amusing and enjoyable, overall the manga was one that simply wasn't that fun. The ending is also the standard indecisive ending, but that's pretty much standard for manga like this so I didn't really find it disappointing. The art was quite good though, so I suppose there was some value in reading it for that alone.