A size-difference BL full of erotic scenes between a trashy yakuza and a short hardworking man. Ikuto, who is forcibly connected physically, tries to keep his heart untouched. But facing Yakumo's straightforward obsession, he gradually falls into his "first love."
In a world where both men and women can get pregnant, Atro, Prince of the Fradii Kingdom, is told by his royal father to carry out his most important duty: The Copulation Ceremony. While the royal household watches on, men pour their seed into him!
This is a story about the relationship between two people living together and how it changes a little after one of them realized the other one might be moving out. * They're switching.