Takamisawa Kyousuke Nekketsu!! Kyouiku Kenshuu

Kyousuke Takamisawa is a twenty-three year old man who has been having some trouble finding a job. His last teaching experience wasn't particularly successful, and now he is out for better opportunities in the city. However, his real focus is on his charming female acquaintances - from high-school students to waitresses, neighbors, and other women populating the city.

[From Moby Games]