Although she and her husband are not sexless, the frequency of their sex has decreased recently, leaving 43-year-old Keiko sexually frustrated. When they do have sex, they always keep their voices down so their child can't hear, which leaves her feeling frustrated and unable to fully express herself. In order to vent these troubles that she cannot tell anyone about, she has decided to make her AV debut with Obasan. She came here wanting to feel good, but at first she was too embarrassed to even make a sound. However, once her rationality is released, she moans and orgasms over and over again, letting out a sensual voice!!