Oshiete Teacher

The protagonist has become a teacher at an all girl’s school, enjoying his life as a teacher and living in a dorm with his students. One day, he saves his female colleague from being assaulted and they end up dating. She proposes to him, and he has until Summer Vacation to give her an answer. He has two weeks to choose a partner from the women he has met so far. All of the ladies have some kind of problem that’s bothering them. Our protagonist faces these problems head-on, sometimes dating the girls, sometimes having sex with them, he comes to gradually understand them. When everything is over, who will be standing by his side?

[Translation of synopsis from Getchu.com]