A beautiful older sister working at a mahjong parlor is a Dommist slut. During interviews, she talks enthusiastically about current mahjong parlors and gaming situations. Since it's M, she teases by giving her light slaps or neck strangulation, but it seems not enough as she begs for more intense treatment. As her masochistic fervor increases gradually, she experiences multiple orgasms while violently shaking her hips. After being restrained and teased, she receives an oil massage to relax her body before engaging in another round of passionate sex that leaves her completely disheveled.

雀荘で働くスレンダーで綺麗なお姉さんはドMなスケベちゃん。インタビューでは今どきの雀荘事情やゲームの話で盛り上がります。Mという事でビンタや首絞めをしてさしあげますが、物足りないのか「もっと強く…」と要求してきます。徐々にマゾのボルテージを上げていくと、激しく腰を振り何度もアクメを繰り返します。拘束して責めた後にオイルマッサージで身体をリラックスさせて再度の激しめセックスで更に乱れまくるのでした。