After her husband's employer goes bankrupt, Hotaru takes a part-time job. Her kind manager Tsujimura helps her settle in, but his enormous cock once drove his own wife away. When he realizes Hotaru is sexually frustrated, he forces himself on her. Every deep thrust gives her pleasure she has never experienced and makes her lose control. Before long, she is greedily taking his cock to the back of her pussy, overwhelmed by the intense stimulation against her womb and unable to forget his size.