In order to fulfill a lifelong promise, Eri's father arranges for her to marry the son of his long-time best friend. But Eri's engagement takes an unexpected turn when she finds out that her fiancé, Yuuki, had ran away. Determined to unite their families together through their marriage, Eri sets out to find Yuuki, only to discover that he's now living in... The slums!? Mature themes, Romance, Drama, Slow Burn
