During a particularly languid summer, Do-ha, Ha-kyung’s first love, unexpectedly returns to her. His name complicates the sale of the peanut shop, sparking a sharp disagreement that stirs up old hurts on both sides. Within the decaying conf…

After a two-year absence, Do-ha persists, determined to win Ha-gyeong back. The summer of their shared history resurfaces with the downpour, stirring forgotten feelings.

Beneath the Summer Triangle, a familiar connection rekindles. At Patan High School, Do-ha finds himself drawn back to Ha-gyeong, and a renewed affection blossoms as he reveals his feelings.

The unveiling of long-held secrets precipitates a reckoning. Old hurts resurface, driving Do-ha and Ha-gyeong into a protracted and bitter struggle for possession of the cherished Peanut House.

With a fresh start in their new shared home, Ha-gyeong and Do-ha redouble their efforts on the Patan High project. However, their competitive colleague, Nam-jin, consistently stirs up complications.

A shooting star streaks across the night, and with it, a flood of memories. The past and present intertwine, a confession unspoken. The name Baek Do-yeong lingers, a persistent shadow.

A shadow of resentment deepened within Do-ha as Ha-gyeong’s new relationship blossomed. Meanwhile, Seul felt a prickle of worry when she learned of the pain Seung-taek endured during his hockey game.

Do-ha takes a bewildered Ha-gyeong out for the day, attempting to articulate emotions that swirl within her. However, the effort proves fraught with difficulty, and a growing tide of alcohol leads to a series of mortifying missteps.

As Ha-gyeong ends her relationship with Su-hyeok, hidden truths begin to surface, drawing her into a connection with Do-ha. A shared outing at the amusement park, a double date in effect, fosters a deeper understanding between them.

Baek Do-yeong's return unravels a secret Do-ha has guarded for years. At the Peanut House, laughter gives way to tears, and the residents find themselves facing a pivotal moment once more.

Should the foundation of their shared world crumble, their hearts must be rebuilt. Long-held truths emerge in unguarded confessions, love spoken as if in a dream. It is the moment when the true betrayer of the solar project is revealed. Tog…

In their final summer, they at last become lovers, their affection a quiet defiance against a world that had long felt like conflict. They made a promise then, to shield one another. Birthdays and anniversaries, fleeting moments of everyday…