After a decade of anticipation, Kazuki finally reunites with her neighbors in their old home. She harbors a longstanding crush on Yuuji, her unrequited first love from childhood. However, her romanticized image of him is shattered when he reveals a more mischievous side, behaving provocatively upon their reunion. With both families residing together due to their parents' absence in South America, they must navigate old emotions and adapt to this new living arrangement, all while attending the same school.