The 14-year-old middle school girl Sawada Honoka has lost her parents at an early age, and finding friends at school does not come easily. Living at her aunt's apartment, who is never at home due to work, Honoka wishes for her loneliness to end. Her wish is heard, and so the next morning she wakes up with a demon baby, Mao, in her bed.
Thus Honoka suddenly turns into a…