Mai Nanase gives off a homemaker vibe rather than that of a high school student, causing her male peers to perceive her as old-fashioned and tightfisted, resulting in her being unattractive. Despite this, Mai finds satisfaction in her self-image and pays little attention to shallow matters. Yet, when she encounters Souta Nishino, a level-headed and remarkable young man who happens to be her elder brother's friend, her life takes a dramatic turn. Despite their inexperience in matters of the heart, Nishino falls deeply in love with Mai from their first encounter, leading them to embark on a romantic journey. Their love story is an uplifting tale of two individuals discovering love for the first time while being supported by those closest to them.