KTRA-546 Lazy cousin
https://javbuom.net/en/2224
A brutal lolicon brother pranks his submissive sister "Kyoka" and gives sex education the hard way! To meet my beloved brother's expectations, I study sex hard! Kyoka-chan, an increasingly horny M child! Before I knew it, I turned into a sadistic girl who got aroused when my brother spanked my ass and drove me crazy.
