Paradise Heights

You are Keigo Nakadai, a 25 year old average guy who makes his living doing odd jobs. Now he's got a job as a caretaker of a top class apartment block (thanks to your uncle who owns the place) where all the residents are women! So, while your uncle is off to Hawaii, you are in charge of taking care of the place in his absence.

As you get 'acquainted' with the local residents, certain suspicious events that disturb the local residents comes to your attention, ultimately leading to the mystery of behind Paradise Heights...

[From MobyGames]