Astarotte no Omocha! EX  

Astarottes Toy EX, Astarotte no Omocha! OVA, Lotte no Omocha! OVA, Lotte no Omocha! EX, アスタロッテのおもちゃ! EX, Astarotte's Toy EX

The OVA Astaroette no Omocha consists of three episodes, each focusing on different aspects of the story. In the first episode, Lotte and Asuha are tasked with researching their school project. In the second part, we learn about Zelda's past and how she came to be Lottes bodyguard. Finally, in the third episode, we see a flashback of the queen meeting Naoya and the events leading up to the birth of Asuha ten years prior to the anime's events.