Ayana Kakinozaka serves as a homeroom teacher at Otorinashi Academy, inadvertently placing Yuuki Kagami in the girls’ dormitory after a clerical oversight caused by his gender-neutral name. To protect him from expulsion, she shares her dorm room, mandating he cross-dress beyond their quarters. Her earnest yet impulsive nature amplifies tensions, such as replacing confiscated items with abrupt nudity. She oscillates between guardian and agent of chaos, sparking incidents from wardrobe disasters to risque swimwear mishaps. Possessively jealous of Yuuki’s interactions with peers, she aggressively vies for his focus. Though romantically fixated on him, her actions blur boundaries—like groping student Risa Takabane under disciplinary pretenses. Consistently, she drives the series’ humor and fanservice through well-intentioned but calamitous choices.