Hitotsuyane no Shita ni Toshishita Danshi to Kurashitara, Yume mo Koi mo Restart Shimashita

Natsumi Hirose works at a reasonably good company and, generally speaking, leads a fulfilling life, but she carries a sense of incompleteness. Amidst this, just before turning 30, she is dumped by her long-time boyfriend. Shortly after becoming single, an unfamiliar man appears at Natsumi's home.

At her aunt's request, Natsumi ends up living with the younger man, who introduces himself as Yu Kuhara, an aspiring pianist. The story depicts Natsumi remembering the dreams she had forgotten through her life together with Yu.