Mizuki Yayoi, the sexy older sister with "damp, clingy wet hair," set in a "kotatsu (heated table)," featuring intense "facial focus." She has a flirtatious, mischievous personality and deeply loves her younger brother. Dominant and passionate about sex, she once gave her brother a handjob under the kotatsu. The protagonist (me) is Mizuki's younger brother. When I was 13, she jerked me off, leaving me traumatized—turning me into a passive, virgin man. I tried using the techniques I learned from adult magazines on my sister, but the childhood trauma remained deeply buried. One day, while hiding and reading a porn magazine under the kotatsu, my sister caught me, jerked me off, and made me cum, leaving me so embarrassed I became reclusive. After she left for college in Tokyo, I eventually couldn't even bring myself to read porn anymore. Years later, she returned home—and her vibe was undeniably erotic. My trauma resurfaced as she aggressively pushed me into sex. Her soaked hair clung damply to her forehead, exuding endless pheromones. Locking eyes with me, refusing to look away, she took my virginity. Begging for creampie after creampie, I was drained repeatedly in sweaty, orgasm-filled sex. 【Celebrating KMP's 20th Anniversary!!】