PRED-883 When I agreed to let my younger brother-in-law go inside me for just 10 seconds, it was so much my type that… I lost all reason after a forbidden climax. Waka Natsuki

A forbidden sibling relationship that’s just too compatible…! Natsuki lives with her younger stepbrother, who attends a prep school. He has long admired Natsuki and begs for just 10 seconds of intimacy… and it turns out to be an incredible match, sending her into overwhelming pleasure right away! Even though they know it’s wrong, they can’t stop themselves, and they keep seeking each other again and again. Whenever they get the chance, they go for another 10 seconds… and then another. Natsuki’s usually modest demeanor gives way to intense reactions, leading to repeated climaxes. Their secret, intimate bond grows deeper and deeper as they try to satisfy each other completely. It felt so good it nearly made them lose all reason…