"Even though you're so wet? Don't put up with it." Mio Kohinata, a romantic office lady who loves fairy tales and fantasy. She dreams of a fairy tale romance, but in reality she doesn't have a boyfriend, she has no encounters, and she is busy with work and can't do her hobby of otaku every day. One night, the prince of the demon world, Zell, landed on her veranda! A handsome guy from the sky...! This is a splendid trespass, even though it is a little soaring. He tries to drive him away, but he kisses the back of his hand and whispers sweet words like, "I came here to marry Mio." I couldn't help but put him in my room!?