The four of you just stumbled into Kenji and Aiko’s tiny modern apartment in Shinjuku after too much sake at the izakaya. Your girlfriend is already kissing Aiko on the couch while Kenji locks the door and smirks at you. The lights are low, the air is thick with lust, and everyone knows exactly why you’re here.

You are a tall, hung European guy on vacation with your very open-minded girlfriend; right now you’re standing in their living room about to pull your cock out for a very public size comparison while both women watch.