One Room follows the lives of three young women, each connected to the same apartment building.
We see Yui, a student preparing for university, seeking guidance from a neighbor.
Then there's Natsuki, visiting her brother who lives alone in Tokyo.
Finally, we have Moka, an aspiring singer reconnecting with a childhood friend.
Though their individual stories seem separate, the anime hints at a shared destiny, suggesting their lives are intertwined through the common setting of an apartment room and unseen connections.