is a Japanese light novel series by Daisuke Suzuki, with illustrations by Kyōrin Takanae. The light novel started serialization in Monthly Dragon Magazine in April 2005, published by Fujimi Shobo. A manga adaptation was serialized in the shōnen manga magazine Monthly Dragon Age. An anime adaptation by AIC Spirits first aired in Japan on October 4, 2007. Two radio dramas for the series have been broadcast.
Plot
Shungo Ninomiya, a high school guy, lives in a large house with his older sister Ryōko, who works as a mercenary. One day, Ryōko sends the siblings Mayu and Mikihiro Tsukimura to live with them. Mayu's goal is to overcome her fear of men and to control her powers, however, she is a young succubus, a creature that naturally attracts men. Ryōko and Mikihiro have Mayu and Shungo share everything from the same room to the same bed. Making things more awkward, Shungo's jealous childhood friend, student council president Reika Hōjō, joins the household as a maid.
Characters
, Ayahi Takagaki (young), Takuma Terashima (first radio drama) Shungo, the title character, is a high school guy who trains in martial arts. He often shows self-restraint from his female schoolmates, who enjoy flirting with and teasing him. He and Reika are childhood friends, but he is put in a situation where he must host and live together with Mayu.
, Umeka Shouji (young), Yuko Goto (first radio drama) Mayu is a succubus who is sent to live with Shungo to practice getting over her fear of men. Because she cannot control her powers, she naturally attracts men as if they were zombies, and knocks them out with her power when they get too close. Her clumsiness and ditzy personality often get her in embarrassing situations such as spraying herself with water while wearing a tight white shirt or frequently falling on top of Shungo. However, she is sometimes lucky in getting out of dangerous situations, as demonstrated in the remote island storyline. She wears bat-wing hair clips. It is later revealed that she, Reika, and Shungo have known each other as childhood friends.
, Yuki Matsuoka (first radio drama) Reika is the student council president at Shungo's school, and an heiress to a large conglomerate called the Houjou Group. She acts proud and haughty, and bothers Shungo regularly. However, after being filmed in an embarrassing video where she fails to seduce Shungo, she agrees to become Shungo's maid and lives with him. It is later revealed that she is a succubus who harbors a dark and serious alternate personality that occasionally manifests, as well as a past childhood relationship with Shungo. In the anime, she is involved in many of the Houjou Group's businesses including influencing national policies, meeting with dignitaries, and creating corporate products. In the anime, her alternate personality tries to take Shungo for herself.
, Naomi Shindou (first radio drama) Shungo's older sister works as a mercenary. In the anime, she joins the school staff as a nurse. She carries a camcorder and director's megaphone where she films and directs Mayu in roleplaying situations where she has to romantically interact with Shungo.
, Daisuke Hirakawa (first radio drama) Mikihiro is Mayu's older brother. He is an incubus, the male counterpart of a succubus. He enjoys manipulating Reika and others to do what he wants. He and Ryōko are long-time friends, as they are often seen working together, even in flashbacks. In the anime episode where Shungo searches for ramen ingredients, Mikihiro happens to own the related businesses: a wheat farm, an animal ranch, and a fishing boat.
, Yuka Inokuchi (first radio drama) Mitsuru is a senior student to Shungo, and Reika's main assistant both at school and at home. He has martial arts abilities that rival Shungo's.