Monster Farm 5: Circus Caravan OVA - Kessei!! Orcoro Circus

The Orcoro Circus is a band of people who have come together to bring joy to people's faces. Julio, a young boy in the Orcoro circus, wants to be a professional and famous Monster Breeder. One day after a performance a mysterious beautiful girl with special powers by the name of Nayuta came to force her way into the circus troop.

(Source: Wikipedia)