When high school student Iori Machikawa offers his room to an online friend in need, he expects a boy but gets a shy girl from his class, Kina Suzuhara. Despite Kina's lack of domestic skills, Iori steps up to care for her. As their friendship blossoms, Kina's vulnerability surfaces, leading to unexpected sweetness and affection. The once distant school beauty reveals her endearing side, turning their cohabitation into a heartwarming tale of youthful romance.