Anime Gold Muscle

As best I can determine from the videos, Gold Muscle is about an Olympics-style event in which normal athletes compete against human/animal hybrids who are shown to be far superior mentally and physically to any normal person. The main character is a man wearing a black cloak, a former triathlete who had gone up against an older man who had had himself transformed into a hybrid before their competition. He assists a pair of younger athletes who are also normal humans and is aided by a small weasel in a coach’s costume who guides the younger athletes as they compete in the event.