Bondage Game(ボンデージ・ゲーム〜深窓の隷嬢達〜Shinsou no Doreitachi) is an eroge video game for Microsoft Windows released in 2002, which was later adapted as an hentai original video animation in 2003. It concerns Yu, an orphan with no memory who is taken in by someone named Master Renji, who uses Yu and other women for fetish and BDSM sex. The content is often exaggerated, and includes bondage, futanari, coprophilia, forced coprophagia and extreme violence.