First time dating a girlfriend, practicing sex with a playmate until cumming inside - Jinguji Nao MIAE-281

As an unpopular guy, I finally got a girlfriend, and I begged my childhood friend to teach me how to get along with her! She actually wanted me to lose my virginity to her first! In order to avoid my girlfriend finding out that I was a virgin, I started practicing sex! She taught me how to give oral sex, lick my vulva, and until I ejaculated inside her, I realized that it was real sex...