"My boyfriend who was supposed to be an adult suddenly became a child...!?"

My favourite lover came to stay at my house for the first time. Tsugumi's chest swells in anticipation of her first sex with him, which she had longed for.
Slowly pushed down on her bed, at that moment when I thought it was finally... a mysterious handsome boy appeared in front of her.
Surprised, Tsugumi searches for Yutori, her lover who suddenly disappeared, but he is nowhere to be found in the room.
Meanwhile, when I called his name, for some reason the boy answered...! ?