Yuki Hotaru

In this game, you control a successful doctor who left his quiet hometown for Tokyo. There, he had a successful career at the central hospital, which made him forget his past life in the province. But an inexplicable desire to return overcomes him, so he takes the next train to his hometown. He finds that many things have changed. Other people are living in his former house. His old lovers have a new life. Little children have turned into pretty young girls. But some people remember him, and not everyone is happy about him leaving the town and moving to Tokyo. Now, the doctor wants to establish good relationship with the female inhabitants of the town... which for him, can only mean one thing.

[From MobyGames]