GEKI-050 - アメリカ留学で鍛え上げたデカ尻だけで射精させる尻コキの天才「ギンギンに勃起したおち○ぽを見るとアナルに擦りつけたくなっちゃうんです……」現役カリスマ美尻トレーナー もなみさん（27歳）

I find butt-fucking scenes erotic in other works too, but this one is on another level. It's just incredibly sexy. You can tell they put a lot of effort into the camera angles for the butt shots. It's a bit short at 70 minutes, but the close-ups are long enough that you won't have any trouble finishing. Highly recommended for Monami fans and butt lovers. If possible, I'd love to see this re-released in VR.