三十路の童貞力

"Did you know? If you stay a virgin past the age of 30, you become a sorcerer."
Could this legend really be true!?

Virgin "young" man Ryuichi celebrated his 30th birthday.
Everything he thought was real was turned on its head when his groin suddenly glittered.
It was the Cummoning, and it summoned a beautiful goddess from another realm.