The protagonist of the "lucky pervert" harem manga is a girl?! Natsuno Hanabi is returning to her home in the countryside for the first time in six years to attend high school. She was expecting to live in the luxurious Tachibana Manor... but due to an error, she ends up in the run-down apartment building Tachibana House. On her very first day there, she encounters a mysterious naked girl, witnesses an older girl in an embarrassing moment, and even ends up face-to-face with an embarrassing view of her close friend from childhood. And... she doesn't see any of this as "lucky" at all, okay?!