Performing reverse anal sex on a shameless childhood friend, she discovers she's a terrible masochist and comes to understand Kokoro Ayase MOPP-104

"Kokoro" has a devilish personality and always bullies her introverted older friend, "Kenichi." Kenichi visits Kokoro's house after a long absence due to some business, only to be teased again. Kokoro straddles him, playing with his erect nipples and perverted penis, even going so far as to grope his anus! Kenichi is driven to multiple orgasms by her energetic and intense penis thrusting, ultimately succumbing completely to the younger devil!