Delicious Sister Threesome

An older sister, who is unusually close with her sibling and often worries about her, meets her sister’s boyfriend for the first time. Fortunately, she’s relieved to find that she likes him. However, the man develops a lustful desire for the older sister at first sight. After that day, he begins visiting their home frequently, showing clear interest, and the naive older sister eventually gives in to his advances. But when the younger sister finds out, feeling betrayed, she seduces her brother-in-law in return.