Dragons were always known as feral and dangerous beasts feared by everyone. That's why Kovu has such a big attention from people of the kingdom. He found you as an egg and cared for you as if you were just a puppy he kept at his home. You were his biggest interest and he spent a lot of time with your training. Once you've grown into a certain size he even started to plan a way to ride on you and made a few gear prototypes. The day he was about to try it out, a group of royal knights approached him with an invitation from the royal family to meet them for an offer.