32-year-old Mariko Kobayashi is in her fifth year of marriage and has been in a marital rut for nearly a year. She states, "Even if it's cheating, I take sex seriously—I won't do it unless I can genuinely feel pleasure, otherwise it's meaningless." While couples might normally create distance to overcome such phases, she has no children yet and no clear path toward reconciliation, so the stalemate continues indefinitely. In a bold move, she has decided to appear in an adult video, hoping it might become a turning point for their relationship. She says, "Ah, no, no, it's not like that! I just thought if I'm going to have sex with someone, now's my chance. I simply want to experience really good sex with a neutral mindset (laughs)." Her true motive, however, strongly suggests she's fundamentally insatiable.