Elysion: Eien no Sanctuary (2000)

As the story goes, an old man lives on an island in a mansion near the ocean. He's reclusive, private and very wealthy. As the family physician, you are summoned to the island to care for the old man. The premise of the game introduction seems innocent and routine enough but the various characters you meet arouse suspicion and suspense amongst the different players inside the mansion. The cast of characters include the codger's granddaughter, a groundskeeper, sinister men, and five maids dressed in frilly maid outfits that have a tendency to billow gratuitously.