A Sibling’s POV

College freshman Ga-Yeong Cha has never had a boyfriend—all because of her fiercely protective older brother, Gang-Hyeon, who systematically drives away anyone who shows interest in her. Determined to finally win over her long-standing crush, she purchases a peculiar bracelet said to remove her brother from her romantic affairs. That night, she quietly fastens it around Gang-Hyeon’s ankle while he sleeps and drifts off contentedly. Come morning, however, she awakens trapped inside his body. Forced to navigate each other’s daily routines, the siblings find their university lives spiraling into a whirlwind of crossed signals, tarnished reputations, and romantic mayhem.