Daisuke and Kenji looked at Takashi's mother, Ruri, with more than just feelings as a friend's mother. The two of them found out about Ruri's personality from Takashi, and Kenji, finding an opportunity to exploit it, devoured Ruri's body. Daisuke, who had been watching the whole thing, also took advantage of Ruri's weakness... Moreover, he showed Takashi her lewd appearance.