My daughter-in-law's bookmark, who has been eating with me lately, doesn't eat much and goes back to her room. While worried, I peeked into the room and saw her leaning over the desk, playing with her crotch and writhing her waist. Seeing Shiori, who was still clumsy, stroking her important parts, I unconsciously inserted my fingers into my own vagina and became obsessed. Even though I knew it was immoral, I took a step forward into the bath where Shiori was bathing.