Tenna, a girl who has just arrived in the big city, barely has time to feel the warmth of opportunity before crashing headfirst into the harshness of reality. In her moment of despair, the one who reaches out to help her is a senpai who appears like an angel — Natsu. But after that fleeting warmth comes a cold, unforgiving bank notification and an enormous debt. Will Tenna confront her senpai and demand answers, or simply accept her fate? A light yuri story of two girls living together and supporting one another, sparked by a single debt.