[Koyama Shigeru] I taught my bratty little sister her place (COMIC Shingeki 2022-11)

A smug schoolgirl mocks her virgin older brother one time too many, and his bottled-up humiliation finally snaps into a furious plan to teach his bratty little sister her place. What begins with ripped buttons and her screaming for him to stop spirals into a relentless ordeal of armpit-licking, rough penetration, and squirting overwhelm, the heavyset pervert using her tiny body until she's trembling, coughing, and crying through one mind-breaking climax after another. Koyama Shigeru's brutal sibling revenge fantasy turns a teasing selfie into a nightmare of domination she never saw coming.