Eiji is a high school student who lives with his father, an unsuccessful novelist. He is a shy, otaku, and poor boy, but he is an honest boy who never forgets the compassion for others that his late mother taught him. Even he yearns for Aoi, the daughter of the president of a large company. However, Eiji is unable to look Aoi in the eye because of the huge disparity between her and himself. One day after school, Aoi greets Eiji when he comes home. Aoi says one surprising thing to the surprised Eiji...

Sumire, who grew up being abused by her own mother and sister, was not allowed to go on to higher education, and all the money she earns from holding down jobs was taken away by the two spendthrifts. When she returned home, she was worked hard without a moment's rest, and the only solace she had was time to read books. Then one day, a yakuza gangster, claiming to be a young leader of the Shizuki clan, comes to collect on a debt her sister incurred! Sumire, who was abandoned by her family, and Kiriya, who lives a life of a gangster - the clumsy duo interweave to create an exquisite Cinderella romance starts now!