Sato Hokomi is a 29-year-old single woman with a sincere and honest personality. On her presumed wedding day, her boyfriend runs away and they break up. She finds out that her ex-boyfriend was cheating on her. Sato Hokomi decides to avoid men who are trashy and will make her cry. At that time, she meets Kuzuya Kairi, who is kind and friendly. She feels like it is fate to meet him. Kuzuya Kairi works as a photographer by day and a bartender at night. He is a mysterious person, who experienced big trauma in his past. Being influenced by Kairi Kuzuya and also determined that she wants to change herself, Sato Hokomi takes up boxing.