Could it be that you're my stalker? I've never seen such a cutie like you before." Kunisaki, a locksmith who enjoys unlocking things, takes on the challenge of unlocking a highly secure apartment that even his senior struggled with. ★ "You want me to do this... That's why you came here, right?" The owner of the apartment fell for me at first sight?! How did I end up having sex with him?! Note: non-con/dub-con