In the course of the summer season of her freshman year of high school, Yuzu Aihara’s mom remarried, forcing her to switch to a brand new faculty. To a trendy socialite like Yuzu, this inconvenient occasion is simply one other alternative to make new buddies, fall in love, and at last expertise a primary kiss. Sadly, Yuzu’s desires and magnificence don’t conform along with her new ultrastrict, all-girls faculty, stuffed with obedient shut-ins and overachieving grade-skippers. Her gaudy look manages to seize the eye of Mei Aihara, the attractive and imposing pupil council president, who instantly proceeds to sensually caress Yuzu’s physique in an effort to confiscate her cellphone.
Completely exhausted from her first day, Yuzu arrives house and discovers a stunning fact—Mei is definitely her new step-sister! Although Yuzu initially tries to be pleasant along with her, Mei’s chilly shoulder routine forces Yuzu to start teasing her. However earlier than Yuzu can end her sentence, Mei forces her to the bottom and kisses her, with Yuzu desperately attempting to interrupt free. As soon as achieved, Mei storms out of the room, leaving Yuzu to ponder the true nature of her first kiss, and the secrets and techniques behind the tortured expression within the eyes of her new sister.