In the heart of the city, a series of interconnected stories unfold within the walls of a 1K apartment shared by various roommates. Natsu and Kouno, two individuals who share a night of passion, must navigate the complexities of their relationship, with Kouno harboring feelings of love for Natsu but struggling to confess. Nearby, Naomichi and his childhood friend Kei, who have moved to the city for university, share a 1K apartment and grapple with their own relationship, seeking to take it to the next level. As the seasons pass, the roommates' lives intertwine, and the narrative explores themes of love, identity, and growth, all set against the backdrop of their small, yet vibrant, community.