Himegoto by Riddle Soft - Adult Sex Game

Mikio is a high school teacher. He is kind and very popular among female students. But, he is actually the son of a boss of a gangster group, and he'll need to succeed him in the future.

One day, he gets married to Azusa. She used to be a deliquent. But, he reforms her, and they fall in love. Three months later, he lives a peaceful life with her...