Koihime vs Zoku Koihime

When Musashi returns to his childhood home, he rekindles friendships with four beautiful young women from his youth that he'd totally forgotten about. Hidden desires give way to supernatural secrets, though, as Musashi discovers that the village he remembers hides a terrible secret that he never even imagined. Can love really conquer all? (Source: AniDB)

Musashi had come back to his village again. He had lost his memory about the four princesses who had been his childhood friends, and also forgot that he had sexual intercourse with them. Though he lost his memory, the village and his grand mother's house made him regain familiarity. He was welcomed at his grandmother's home, and met a girl named Tamamo. She said she was his childhood friend, but h...