Hatsuho has just moved to Tokyo after being accepted into college, eager to begin a dazzling new chapter of her life as a university student. Her excitement quickly turns to shock when she discovers that her next-door neighbor is none other than her one and only ex-boyfriend from junior high school, a relationship that ended in an awkward and unresolved breakup. Despite his condescending attitude, his good looks make him difficult to truly hate, and Hatsuho finds herself once again being pursued by this problematic former flame.

The story is set in contemporary Tokyo, focusing on the everyday environments of college life and the adjacent residential spaces where the characters live. The central conflict arises from the collision of Hatsuho’s desire for a fresh start with the unavoidable presence of a significant person from her past, forcing her to confront unresolved feelings and the reasons behind their initial split. The male lead, Yori-kun, is characterized by a push-and-pull dynamic, acting in a superior manner while simultaneously showing a determined interest in rekindling their relationship.

The narrative unfolds through a blend of romantic comedy and emotional introspection, balancing moments of tension with humor as the characters navigate their reconnection. Key narrative arcs include Hatsuho’s personal journey of self-discovery and growth as she adapts to life in Tokyo while managing the chaos of living next to her ex. Another central thread involves exploring the nature of their past relationship and the miscommunications that led to its end, offering a second-chance romance that examines whether first loves are best left behind or worth revisiting. The series captures the universal awkwardness and unexpected humor of being forced to re-engage with a past love, highlighting themes of communication, forgiveness, and the lingering impact of youthful relationships.