【Mosaic Book】White pee and yellow pee in sister’s vagina

One day, Haruki and his friends are looking at a sex book in the park when Ayako Sano, the woman who lives next door, sees them. The story is about a young girl who is looking at a sex book in the park with her friends.
“If you’re into this kind of thing, would you like to try it with me? Something naughty.

This is the first time Haruki has done this with a woman.

35 pages of main story (grayscale manga size 1075×1523 px)
Cover (size 2800×2100 px)