JUMP-5039 Our younger sister, who came to us under the foster care system five years ago, is interested only in naughty things and shows off her well-

Sayaka-chan, who became a younger sister of two older brothers in the foster care system when she was little. As you get older, you gain a lot of experience and knowledge, but in Sayaka's case, it seems that she has learned only naughty things in proportion to her boobs getting bigger. Even though I don't have any hair underneath, I pester and seduce my older brothers with all the erotic things indiscriminately. A love diary between an adolescent girl and her older brothers.