Please no practical demonstrations of weird sex from his prison not!dad thanks oh god. Anyway he's still clearly trying to process all this. You can practically see the gears turning in his brain as he listens. Leaflets and pictures are probably a good idea at some point because he's still a little confused on the mechanics of all this.
"That actually feels good?" It's a mixture of skepticism and genuine curiosity. Jack always kinda confuses him like that because he seems like this big tough action hero. It always seems unexpected when he's into gay stuff and Kanji never knows what to make of it.