Sana Kawashima is 28 years old. She is a full-time housewife who lives with her husband and her 4-year-old child. Her gentle way of speaking, calm demeanor, and the aura of her H-cup breasts that sway with every step give her the air of a soothing wife. But it is she herself who really wants to be soothed... Since giving birth, her marital relations have become a duty and she is no longer satisfied, so she masturbates more frequently. Watching adult videos on her smartphone has ignited Sana's desires. Sana feels an indescribable excitement when she sees an actress being spanked on the screen, as in her hobby of volleyball, and gasping while being strangled. When she realized that she could not have this kind of sex with her husband, she decided to appear in an adult video. This soothing volleyball mom discovers a new sexual fetish and makes a Kokoro attack.