56-year-old housewife Izumi Ryouko. Having reached 30 years of marriage, she's a fully matured wife who still makes love with her husband once a week. However, their sex has gradually lost its former intensity and passion, leaving her somewhat unsatisfied. When asked to choose between sex without kissing and kissing without sex, she says she'd probably choose kissing—such is her love for it. She insists that even as she grows older and sex becomes more difficult, she wants to keep kissing forever. What Ryouko truly desires is a thicker, stickier, melt-in-your-mouth eroticism. Following her instincts, she will passionately entwine her body with another, reigniting her suppressed desires.