Six years have passed since moving to Tokyo, and Erina (Fujisaki), working as an office lady, struggles to make ends meet while sending money to her sick mother. She takes on a part-time job at a café and juggles multiple other jobs to survive. Meanwhile, her younger brother, who moved to the city shortly after her, drops out of university solely to support their mother, leading him to take up shady part-time work. A story where family devotion collides with harsh reality.