Dragon-Riders

Tavon is poor. His mother is long gone and father working into the later hours of the day. His brother, Broder has a wife that is with kids due soon and Tavon does not want to ask anything of his brother who has more mouths to feed than him. One day, Tavon finds an egg in his backyard. Big, blue, and shining. He keeps it and every day waits for it to hatch. One day, it does.
It's a dragon.
Legends about dragons swirled around for much time but Tavons father said it was all rubbish. Tavon loved these stories though. He knew that it was impossible, yet true. He was what seemed like the last Dragon-Rider. An ancient race of people that rode dragons and protected nature and humanity from harmful forces like, well, humanity itself. Ever since Ahriman took over, people lost hope. Now, finding out he is the last one, he embarks on a journey to connect with his dragon, to find out more about being a Dragon-Rider and to eventually destroy Ahriman.
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Set it olden days. No phones/electricity.