FNS-214 "Eh... Sana-chan!?" I accidentally ended up having a passionate French kiss with her younger sister. She blushed at her first kiss, but her tongue intertwined with mine, and we had sex like crazy... Ikuta Sana - Sana Ikuta

Since her family was going to be away, I excitedly stayed the night at her house. Of course, we were being lovey-dovey, and that night, wanting to have sex, I gave her a passionate kiss, but she resisted. When I looked closely, I realized I was kissing her younger sister, Sana. I apologized immediately, but it turned out to be Sana's first kiss, so I was in big trouble. But Sana was blushing, and I couldn't tell if she was angry or sad...