[Ecchi Ecchi Daifuku (Neko Daifuku)] Older Sister Intently Punishes Her Brother's Anus [TsukiNet]

A mischievous older sister takes charge, binding her younger brother and delivering relentless anal discipline, her eyes gleaming with sadistic delight as she forces him to endure humiliating lessons. The tension builds as she threatens to degrade his body further, promising that every intimate act will be a reminder of her dominance. With each cruel command, the brother's helpless protests echo, setting the stage for an intense, erotic power play.