Season 1
It's autumn in Tokyo, and when P, a long-time resident, takes his best friend Beboy on a sightseeing tour. They are unexpectedly joined by twins Pan and Plai. The four guys spend time together in the city, making precious memories together.
Season 2
A year after their fateful trip, P has built a new life—but when Pan returns to Japan with someone new, old feelings stir and winter begins to shift.