SBCI-026 - Sister, need money? Pay me back with your body. The secret corruption of siblings.

A younger brother who extorts money from his sister for 'textbooks' only to blow it all on gambling, eventually getting caught by her boyfriend. Since that day, the line between them has completely blurred. Upon discovering his sister works at a sex parlor, he uses it as leverage to turn her into his personal plaything. From her body to her very soul, she becomes a puppet under his complete control.