Shion, who did not develop magical power even after becoming an adult, was entrusted to a young couple engaged in magic research for treatment.
After a certain incident, his magical power finally manifested, but he couldn't control it, so Rui, a healer, decided to take care of him again.
However, in order to be able to handle magic as a full-fledged person, it was necessary to become an adult in a sexual sense.
Her married wife, Rui, cannot let Shion graduate from being a virgin, so she will proceed with the preparations on the condition that she can do it, but...
