Himitsu Seikatsu ~Hitotsu Yane no Shita~

Hayato is starting his career as a teacher. He stays at his aunt's house but a debt collector suddenly comes and kicks him out of house. He is somehow saved by a woman at the park, Chiyo, who offers him a place to stay. She has a daughter, Satomi, who is a student of Hayato's school... Nobuhiko is a student at the school as well. One day, Maki, his teacher, suddenly comes to his apartment. According to her, her apartment is burnt down, and she asks, "Let me stay here for a while." Nobuhiko reluctantly accepts it, and they start to live together....

[From ErogeShop]