IENFH-19501 - I wanted to lose my virginity with my first girlfriend, but it ended up happening with someone else. A perverted sister who deeply loves her brother is jealous and anxious that her brother has made his first girlfriend. "My brother's virginity is mine!" - Yokomiya Nanami.

The sister is shocked that her brother has made his first girlfriend. The sister is jealous of the girlfriend and tries to secretly send a "Let's break up" line message to the girlfriend on her brother's phone, or says things like "How can you have a girlfriend when I, your sister, am here!" and completely loses it. But while she's drunk and asleep, her sister secretly performs penetration, mounts her, and shakes her hips! And it felt really good!