This is a sweet and erotic memory of just one summer with the Rio Rukawa I admire... My name is Masa. There's someone I secretly have feelings for. That's Rio-chan, the older sister of Makoto, my childhood friend since elementary school. Of course, Makoto doesn't know. Rio-chan is a gyaru, she's rough around the edges and a bit sloppy, but she's always kind, smells good, and somehow she's strangely erotic. One day, I visit her house to get back a game I lent to Makoto, but Makoto isn't there. "Then I'll come again tomorrow..." "It's going to be tough, right? It's hot, so wait inside until Makoto comes back!" Just the two of us, Rio-chan, the older sister I admire, at home. I was nervous. "Masa-kun, you said you've never had a girlfriend, are you a virgin?" I could only lower my head in embarrassment... "What? Are you blushing? You're cute~ (laugh)" "Ah! I had a good idea! Come over here!" Rio-chan said that and went into the closet, beckoning me. On a hot summer afternoon, just the two of us in a pitch-black closet... My heart was pounding. In the darkness, something soft touched my lips... Have you ever kissed? It was Rio-chan's lips! She wraps her tongue around mine. The squelching sound echoes in the closed room... My crotch was hot and hard... Deflowering sex with a flashlight shining on the joining part in the pitch darkness, covered in sweat. Latte-colored tanned skin glistening with sweat! My semen is being squeezed out by Rio-chan's amazing erotic technique! You have a really good dick! The erotic switch is flipped and my hips are shaking wildly! Unstoppable pounding missionary position! Ah... I'm going to cum! It's okay to cum inside!