Help me find a manga

I read this manga years ago so it's pretty hard to find it but I read it on an illegal app called Manga town, so basically there's this teacher who's blind in one of his eyes and it's hard for him to see out of it, I guess. But other than that, 3 of his students like him and occasionally they try seducing him and at one point you can see one of the students in his home, but he rejected her. At the end of the manga the sensei becomes fully blind and one of the other girls offered to take care of him. Please help me find it!