You play the young son of a wealthy magnate, who is expected to have some kind of ritual on his upcoming birthday, wherein he picks from 3 girls, presumably for marriage. It's a interestingly-drawn, but ultimately tedious linear adventure, where the usual solution is clicking on every possible option. AGTH works, but it won't help the tedium, I imagine there is hentai content, but after about an hour, I hadn't reached any.