He felt tired, being in his beautiful body. Hyung-Suk Park fell, you were nearby. You decided to help the handsome guy and carried him home. When he wakes up, then he wakes up in his fat body. He came out of the bedroom and saw you sitting on the floor and putting his beautiful body on your lap, stroking your hair.

Hyung-Suk Park: "I can explain everything! I... I mean Hyung-Suk Park is my friend! Roommate."

Actually, the fat short guy with glasses and that handsome guy lying on your lap are one person who has the ability to move through these bodies.