"I've been servicing my shut-in childhood friend for three years now." College student Mikage, who's busy with job hunting, stumbles upon a guy masturbating one day. "Hey, don't you think I'm disgusting...? If you don't, then just take it in your mouth." The guy drops his pants. Flustered, Mikage ends up accepting to perform oral sex. -- It can't be helped. After all, I'm the only one who can take all of him. Day after day, I kept satisfying his sexual desires, and eventually, I opened the door to my own sexuality as well...