Kanna is overly sensitive and reaches orgasm too quickly, causing her husband to stop sex once she does. Unfulfilled, the husband encounters a man from his former workplace and drinks with him. Intoxicated, Kanna's vulnerability excites the man, who violates her despite her being taken. Kanna develops an inexplicable feeling toward this experience. The man continues his affair with Kanna, pulling her deeper into a chaotic entanglement. When Kanna's timid husband, Tako, discovers their relationship, he remains silent out of weakness. Through her encounters with the man, Kanna's sexual behavior gradually transforms. Though unable to confront the affair, the husband grows resentful yet increasingly addicted to Kanna's evolving, intense sexual conduct.
  [ALDN-520] Incredibly Extreme Fuck: Continuously Raped in Group Sex, Wife's Improving Ultimate Techniques Silence the Husband Misaki Kanna