Seikoku no Dragonar

Synopsis

Ansarivan dragon knight acadamy is for boys and girls who had made a contract with dragons and teaches students how to raise them. Ash Blake has a particular Seikokuon on his hand, a proof of being a contractor, but he didn't have any dragons for his partner. After an incident the boy's dragon finally hatches. However, the dragon that appeared was different from other dragons. It wasn't in a form of dragon but had a form of a girl. (Source: MyAnimeList)