Hana Takahashi, a cheerful and kind-hearted young woman, runs a small ramen shop on her own after losing her parents in an accident. Despite the hardships, she remains optimistic, pouring her love into every bowl she serves.
One of her regular customers, Ryo Kobayashi, is a quiet and mysterious man who seems oddly interested in her. What Hana doesn’t know is that Ryo is a hitman, feared in the underworld. As he falls for her warmth and kindness, he struggles to keep his deadly profession hidden.
Between dodging his past enemies, dealing with nosy coworkers, and surviving the ramen shop’s aggressive cat, Ryo’s double life becomes a chaotic balancing act. Will he manage to keep his secret from Hana, or will fate (and bad luck) expose everything in the most ridiculous way possible?