The player model, enemies and the sex scenes are all modeled, rigged and animated in Blender using Blender's own animation tools and the models with their animations are then imported into Godot (the engine I used for the game) and handled/played through its animation framework when necessary. It's a very crude setup I used for this particular game, mostly due to inexperience in Godot and specifically handling 3D assets which I had no prior experience when I put the game together for the Jam, but it got the job done.