[Amayumi] Kumiko (Karen Saku) [shaddy746]

Kumiko has shared a home with her stepbrother since before elementary school, but their careful distance shatters the day she discovers a notebook marked with her name and filled with his private fantasies. Armed with that knowledge, she waits in their parents' room dressed in a school gym uniform and bloomers, asking him with a straight face whether he likes the outfit—until his composure finally breaks. What unfolds is rope-bound cunnilingus that leaves her squirming and breathless, juices flowing as he demands she keep reading every depraved page of his notebook aloud.