Rika was devoted to sports until marrying her longtime boyfriend after becoming pregnant. From childhood aikido to school track, tennis, and dance, she was always active. Marriage changed everything: the pandemic limited her freedom, while her controlling husband stopped her from doing what she loved. They once had sex almost daily, but after childbirth it nearly disappeared. With stress, frustration, and pent-up lust ready to explode, Rika finally surrenders to her desire and becomes hooked on sex with another man.