"For the past three years, I've been satisfying the sexual needs of my childhood friend who has become a recluse." One day, Mitsuha, a female college student busy with her job hunt, encounters a man masturbating. "Hey, you think I'm disgusting too, don't you? If not, then suck me." The man pulls down his pants. Flustered, Mitsuha unconsciously accepts him giving her a blowjob. --It can't be helped. After all, I'm the only one who can accept everything about him... Day after day, I continue to accept his sexual desires, and eventually I open the door to sex myself...