In this scene, Ibuki is riding on top of Guy. They look at each other intensely, both being flustered as they are enjoying each other in there intense love making. Guy is grabbing onto Ibuki's ass as she is riding him. I attached a picture to give you an idea.

Black Lagoon - In His Wildest Dreams: While getting washed up, Rock/Rokuro Okajima discovers that he has become a woman; after learning that he's not the only one that has changed, he runs off and eventually encounters Revy who's packing a lot more than just her ******s; Rock is *****d to deepthroat Eda who's groping Rock's boobs while Revy bangs Rock from behind; everyone's partially clothed and Rock has a surprised look on her face