A new university graduate ventures into the city seeking housing and job. With his low budget, he found a ridiculously cheap place at only 9800 yen a month. After meeting the beautiful and young landlady, he immediately took the offer without further consideration. Unfortunately for him, it seems the mansion is truly a place for vampires, zombies, snow ladies werewolves, etc. Welcome to Magetsukan Kitan, a semi-harem romance comedy with heavy ecchi that borders on hentai.

Using Tezuka's characters, the very best artists were allowed to let loose and adapt his characters into short stories.

For some reason, there are many incidents around Kirigamine Ryo, the deputy director of the detective department at Koigakubo Gakuen High School. The thief who disappeared from the school building, the relationship between the classmate and the poisoned coffee clan, the UFO turmoil of out-of-school learning-Ryo is enthusiastic about solving it, but the gag is just clear and the reasoning is developing. Is it the deputy director of the detective department who will show off the good reasoning? What is the end of the humor school reasoning?