Season 1

Mit 15 Jahren noch mal Bruder: Basara kann kaum glauben, dass die rothaarige Schönheit Mio und die süße Maria seine Stiefschwestern werden. Doch Mio ist auch die künftige Dämonenkönigin und Maria ein Sukkubus, entsandt als ihre Leibwächterin. Das ist zu viel für Basara, der als Mitglied des Heldenclans Mio töten müsste, als Bruder und Junge jedoch versucht, Herr seiner Lust zu werden.

When Basara Toujou's father suddenly brings home two beautiful girls and introduces them as his new siblings, he has no choice but to accept into his family the Naruse sisters: busty redhead Mio and petite silver-haired Maria. But when these seemingly normal girls reveal themselves as demons—Mio the former Demon Lord's only daughter and Maria her trusted succubus servant—Basara is forced to reveal himself as a former member of a clan of "Heroes," sworn enemies of the demons. However, having begun to care for his new sisters, Basara instead decides to protect them with his powers and forms a master-servant contract with Mio to keep watch over her. With the Heroes observing his every move and the constant threat of hostile demons, Basara has to do the impossible to protect his new family members. Moreover, the protector himself is hiding his own dark secret that still haunts him to this day...