New office worker Sakura Kojima visits an angry customer's home and drops to her knees to apologize over a product complaint. He promises to forgive her if she does “anything” he says, so she strips, removes her underwear, and even lets him write on her ass while enduring the humiliation for her company. The domineering customer makes her suck his cock before repeatedly pounding her from behind, forcing her into convulsing orgasms. Kept as his sex slave while he pushes his luck, Sakura gradually discovers pleasure in the abuse.