Hentai Comics by Ka Y Souken

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• [Department Y Research Institute] Gen'ō No Seidorei-Chan De Asobou!
• [Department Y Research Institute] Rorisakyubasu Wa Ningen Ni Tsukamaruto Dō Naru No?
• [科Y総研] 魔女堕とし [DL版]
• [科Y総研] 魔王様と小さな寵姫ちゃん [DL版]