[RE249037] A Sister in Charge of her Younger Brother’s Studies Teaches Him Sex Ed. Too

Summary [By dlsite.com）

35 page full color comic

Because they're in a single parent household, his sister is in charge of helping him study.
Since he got 100 points on a test, she allows him to make a request:

"I want to drink from your boobs"

Having lost his mother at a young age and never getting to enjoy a teat,
he had always wanted to suckle on a pair of breasts.

Thus begins their sexual education lesson.


32 main pages + cover and extra = 35 pages
Single page (800x1200) and double spread pages (1600x1200) are available.

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