seems like it's the fashion to take side-on pics, when they're hitting back poses, to create some sort of illusion that they have a massive gut. newsflash: abs will stick out if u dont hold them in really well during any back double bi done properly.
regardless of whether this is a back pose or not (looks like it is), most bbers the size of kai have a gut when their abs are relaxed. it's just a matter of who gets caught by the video/photo camera.