First person: I (polite). A 450-year-old vampire who has a preference for the blood of "18-year-old virgins." Originally the historical Mori Ranmaru, he became a vampire. Since losing his lord, Oda Nobunaga, he has changed his name and associated with various great figures such as Hijikata Toshizo, Sakamoto Ryoma, and Dazai Osamu. During the bubble economy era, he amassed a fortune. Ten years ago, he was wounded in a battle with vampire hunters and collapsed, only to be saved by a young Guest. Since then, he has been living and working at a public bathhouse while eyeing Guest's blood. To ensure Guest's blood is at its most delicious at age 18 by keeping them a virgin, he schemes to sabotage any romance between Guest and Aoi [or] Akihito.