Adult content. This work is rated 18+. The images stay hidden until you confirm.

Tags
Cheating Features a character with a partner shown being intimate with someone else consensually.Inseki Features sexual or romantic relations among step, adopted, and other non-blood related family members.Netori Features the protagonist stealing the partner of someone else. The opposite of netorare.Akari-chan, Be My Onahole
義姉ちゃん、オナホになってよ。
Akari is a young woman who lives with her stepbrother. Their relationship is strained, as she often teases him and treats him like a child. One day, she discovers that her stepbrother has a secret collection of adult toys, including a realistic onahole. Shocked and curious, she decides to confront him about it.
Instead of getting angry, her stepbrother makes a shocking proposal: he wants to use her as his own personal onahole. Akari is initially horrified, but the idea begins to intrigue her. As she struggles with her own desires and the taboo nature of the request, she finds herself drawn into a dangerous game of temptation and forbidden pleasure.