In the quiet suburbs of Tokyo, 27-year-old Momoko works tirelessly at a large home center, having sacrificed her dreams of college to raise her three younger brothers after losing her parents at 18. Life has been anything but easy—butMomoko has never stopped moving forward.

This winter, she’s given a daunting yet exciting task: leading the store’s Christmas decoration project, a major event that brings the entire staff together. It’s during one of the planning meetings that she meets Manato—a gentle, hard-working man with a warm smile and a quiet strength. Though their encounters are brief due to his night shifts, Momoko finds herself drawn to him.

But behind Manato’s kind demeanor lies a painful past. Once, in an attempt to protect his ex-girlfriend from a gang, he was arrested and labeled an "assailant."
That incident took everything from him—his future, his trust in others, and even his beloved father. Now, he lives with a quiet resolve to support his grieving mother and face the world with a smile, no matter how heavy his heart.

As Christmas approaches, love begins to bloom—not just between Momoko and Manato, but among those around them: a budding romance between Momoko’s younger brother and her best friend, a surprising connection between their bosses, and even a tender story between Manato’s mother and her employer. Each character carries their own scars and secrets, but through love, they begin to heal.