Touko is a twenty-six-year-old single mother working full time while raising her four-year-old daughter, Kotoha, entirely on her own. She is exhausted, refuses to rely on anyone, and has a deep distrust of men after her divorce. One day she collapses from overwork in the hallway of her apartment building and is rescued by the university student living in the unit next door, a young man named Yuki. He is handsome and charming but also a self-described scumbag who drifts through casual relationships and lacks direction in life. Despite his messy personal life, Yuki is surprisingly skilled at cooking and childcare, and he begins to help Touko with household tasks and looking after Kotoha. Kotoha quickly becomes attached to him, and Touko finds herself reluctantly drawn into a closer connection with a man she knows she should keep at a distance. The story is set in an ordinary apartment complex where the residents, including the landlord Taiyou who is also Yuki's friend, become part of their daily lives. As the relationship deepens, Yuki's troubled past gradually comes to light, revealing a history of family trauma and emotional emptiness that explains his self-destructive behavior. A major narrative arc involves Yuki using excessive force to protect Touko from a stalker, which frightens her and causes her to cut off contact, pushing both characters to confront their respective fears and emotional wounds. The manga balances romantic tension with realistic portrayals of single parenthood, personal growth, and the messy process of learning to trust again. Other single-parent characters are introduced later, expanding the story's exploration of different kinds of love and family. The series is ongoing, with its plot continuing to develop through the gradual unraveling of personal secrets and the tentative rebuilding of relationships.