After dating for 10 years, they got married, and before they knew it, two years had passed. After spending 12 long years together, her husband lost interest in her love day by day, and a rift formed between the couple... Feeling lonely and anxious, Ai begins an affair with her former teacher from college. She follows her instincts and has sex with him over and over again, ejaculating inside him, and he keeps asking for her sex... It doesn't end until they do it 10 times a day...