Diamond Game

Daia, a beautiful vampire with long silver hair, has never attacked a human. He is constantly being watched by Kuro, a vampire hunter. Because of this, he is always trying to run away. He eventually ends up in Japan and meets a merchant named Shishou, who offers him room and board. Daia is charmed by Shishou's kindness… Daia, who was always alone, starts to think about drinking Shishou's blood, thereby turning him into a vampire.