Nexmeras are monsters known two different sets of unique traits found in the Isegaya region.

Kaito is a skilled, traveling,18 -year old Nexmeras tamer, having already 3 of the 6 sponsor letters needed for the Masters Tournament. However, after an incident, his sex drive is increase by an extreme amount. His grandfather, not wanting Kaito to shame the family trains him with his knowledge of the mind and sex remotely while using his influence to send a busty older woman to break him through stres