No silly. Of course sneakers can't be grown from transforming Koi Karpers. This is merely an fictional piece by Yoske Nishiumi. But then again, do you have any idea where your sneakers where born?
Think about it for a second: How many of the clothes, jewellery or gadgets you are wearing at this very moment, of which you have no idea where and by whom they were made? Contrary to what some shopping malls want you to believe, they certainly didn't grow on trees. More like this.
Via Hypebeast, via Virtualshoe Museum. Related: Where shoes come from, Flesh Nike, How to grow your own toaster, Shopping Tree, Modern Fossils, Some kids don't like chicken, but they love dinosaur. Thanks Ehsan.