Miss Black Dragon doesn't want to be a mount

The boy, who was born sickly, eventually did not live to adulthood. Before he died, he made a desperate wish that if there was an afterlife, he must have a strong body.When he regained consciousness, he had turned into a black dragon egg.His wish was indeed fulfilled, but the egg was female, well...never mind!Miss Black Dragon believes herself to be invincible, but fate makes her meet her nemesis, a brave girl who dreams of becoming a great knight.Oh no, now the girl wants to become a great dragon knight.============