Raimondo Stimos, unable to use magic even at the age of 15, is sold off to a slave trader by his impatient family.

However, while being transported, he is rescued by the demon Dak and begins to live in his mansion.

Will things really work out between a demon and a human? Why did he take him in? Despite many lingering anxieties, Dak genuinely accepts Raimondo...

A demon with formidable dark powers (?) x A boy without magic