The old knight was once a very skilled dancer. But due to his age, he can't dance anymore. Thanks to the modern technology, there is a robotic legs which works like real legs and won't be affected by ageing. The old knight then bought this robotic legs and told the doctor to replace his real legs with those robotic ones. After the surgery was done, he felt like he's young again and can dance like there's no tomorrow. And so that is the story of how the old knight can dance all day long without feeling tired.
IGN : Nyhx
Server: Duran