The story revolves around Nanami Takahashi, a high school girl navigating the complexities of adolescence, friendship, and romance. Upon starting her sophomore year, Nanami is drawn into a web of social dynamics and takes interest in Yano Motoharu, a popular and charismatic classmate with a complex emotional past. Despite being aware of the rumors surrounding Yano's old relationships and personal tragedies, Nanami finds herself increasingly attracted to him, captivated by his genuine personality that occasionally peeks through his carefree facade.

As the relationship between Nanami and Yano develops, they both confront their inner demons and the shadows cast over them by events from their pasts. Yano, still deeply affected by the sudden death of his previous girlfriend and the subsequent distance from his mother, grapples with opening his heart again. Meanwhile, Nanami must reconcile her feelings for Yano with her own insecurities and the uncertainty of the future. Their journey together becomes a tender exploration of first love and the challenges of letting someone in when the risk of pain and loss looms over them.