Rud raids the treacherous labyrinths, uninterested in fabled riches but desperate to cure his sick sister. Kicked out by a conceited hero, Rud heads home empty-handed until he rescues a girl who exposes his unparalleled protection.

Ashito Aoi, who lives in Ehime prefecture. Ashito has a strong talent in soccer, but he tries to hide it. Due to his very straightforward personality, he causes a disaster that serves as a huge setback for him