Hiromi, a woman in her late twenties, still carries the emotional scar of a failed high school relationship. Her first love ended abruptly and painfully, leaving her with a deep-seated trauma that has made it difficult to trust or connect with men. Desperate to move forward, she signs up with a professional matchmaking service, hoping to finally find a partner. To her shock, the counselor assigned to her is none other than Tsutsumi, the very same senpai who broke her heart years ago. Worse still, he does not recognize her at all. The gentle, kind boy she remembers is gone; in his place is a sharp-tongued, cynical man who offers blunt, critical advice about her approach to dating and marriage. Humiliated and angry, Hiromi resolves to prove him wrong and use the service to find a husband, all while hiding her identity and her hurt.

As the story unfolds, the narrative shifts between the present-day matchmaking consultations and flashbacks to their high school days, slowly revealing what really happened between them. Hiromi’s memories are clouded by pain, but Tsutsumi’s cold demeanor makes her question everything she thought she knew. Meanwhile, Tsutsumi himself begins to notice small details about Hiromi that stir a vague sense of familiarity, though he cannot place her. Their professional relationship grows tense and complicated as Hiromi starts dating other men referred by the agency, while Tsutsumi, despite himself, finds his feelings stirring. The central conflict revolves around whether Hiromi can overcome her trauma and whether Tsutsumi will ever remember the girl he once loved—and why he treated her so cruelly.

The manga also explores the perspectives of secondary characters, including a subplot involving Tsutsumi’s aunt, a fifty-something female company president, and a matchmaker who becomes a surprising romantic interest. The main narrative arc progresses through a series of misunderstandings, emotional confrontations, and small revelations. Eventually, Tsutsumi realizes who Hiromi is and learns the truth about their breakup—a misunderstanding driven by his own immaturity and insecurity. The story culminates in a reconciliation as the two confront their past and decide to try again, this time as adults. The final volume includes a bonus spin-off centered on Tsutsumi’s aunt, adding a lighter, humorous counterpoint to the main couple’s journey.