Even though I finally got a girlfriend, I was too shy to even kiss properly. My childhood friend Rin noticed this and suggested, "Let me be your practice partner?" We practiced everything from French kissing to deep kissing, and Rin's soft lips and the feeling of her tongue intertwining with mine were more pleasurable than I imagined. Our kissing chemistry was so good that we couldn't get enough of practicing every day. The pleasure of intense, drool-filled lip-locking made it impossible for me to resist, so I half-forcefully suggested practicing sex too, and ended up having sex with Rin in a somewhat awkward way. Since then, things have been a bit strained between us, but we can't seem to forget the feeling of kissing each other...