Brain orgasmic sex that stimulates the five senses of a faithful wife to the limit

At the end of summer, when the cicadas' cries began to slow down, the married woman Keiko (Shiraki Yuko) and her friend Junko, together with her psychological counselor, are asked to hear about brain orgasm. Feeling disappointing after the bland sex with her husband, Keiko ends up experiencing her brain orgasm... Keiko climaxes as Sugiura's caresses stimulate her five senses without touching her body, and she wets her crotch as she reaches orgasm. Keiko blushes and leaves the scene, but she can't forget the pleasure and heads to Sugiura the next day...