Eri Inui, a 20-year-old college student, dreams of becoming a mangaka, having been the most skilled artist among her peers since childhood. Despite her passion and talent, she has yet to secure a publisher to mentor her.
However, everything changes when Souta Inusaki moves in with Eri and her mother. Souta, an aspiring violinist and distant relative's son, has come to Tokyo to hone his skills. Eri sees a reflection of herself in the 13-year-old boy, but how will she cope with his adolescence and pursuit of his goals?