[MIDA-523] "I'll teach you how to kiss..." During a visit to the countryside of my hometown (Fukuoka), my best friend's older sister treated me like a play, even though I couldn't even kiss my girlfriend, and started French kissing (Censored)

I'm a university student in Tokyo. I took advantage of summer vacation to return to the countryside in Kyushu for the first time in a while, and found my best friend Haruto's older sister, Hinano, there. As soon as she found out I had a girlfriend, she started making fun of me, but then she said, "I'll teach you how to kiss, big sister..." and before I knew it, she'd stolen my first kiss... Hinano's tongue-kissing, which was so intense it was worse than the summer heat, made my erection go uncontrollable, and before I knew it, she had taken my virginity...