Sanshiro, a recent high school graduate, returns to his hometown to tutor students at his former school while navigating romantic pursuits. His attention fixates on Miyuki Sakakibara, a piano teacher he admired silently during his student years before their paths drifted apart. A serendipitous encounter with Karen, a local idol, unexpectedly reunites him with Miyuki, sparking renewed determination to reconnect with her.

Endearingly clumsy and socially awkward in love, he depends on guidance from earnest students like Yui Narusawa and occasional fortuitous "divine" nudges. Though he interacts with several women, his steadfast priority remains Miyuki. Shared history at the same school as both Miyuki and Karen quietly fuels his motivations, with past bonds shaping his present endeavors.

The narrative follows his evolution as he confronts insecurities and external challenges to voice his feelings. Allies like Karen and Yui immerse themselves in his romantic journey, creating interconnected dynamics that reveal his need for communal support to traverse emotional hurdles.