Ordinary highschooler Shinomiya Souji was bewildered when the “CHiLD” Ruri fell from the sky suddenly and start calling him “Papa”. A spear-wielding girl, Himuro Suzuka, ordered him to hand her over. According to Suzuka, the “CHiLD” are beings with the souls of the Gods of Destruction made to destroy humanity. And magic organizations sent magicians such as herself to prevent that. But, Ruri would not leave Souji, causing Suzuka to hesitate. In the end, the three of them ended up staying under one roof so as to be kept under observation!? On the other hand, what secrets was Souji hiding…