|Japanese Name:||負けるな!魔剣道 (Makeruna! Makendou)|
|English Name:||Don't Lose, Makendo!||Production:||OLM, Inc.|
|Opening & Ending||
Currently the only OVA of Makeruna! Makendou and only animation based on the franchise, it explains more details and expands the world in which Mai and Doro live in. It happens after the original Makeruna! Makendou and before Makeruna! Makendou 2.
Mai continues to live her normal student life plus also still having her job as a monster hunter, although she still doesn't like it. Hikari, Mai's younger sister, is introduced in the OVA as well as Makenka.
Dr. Mud has tricked and kidnapped Kaimyouji Eizan and transforms him into a cyborg for his own personal interests of having control over the monster and human world. Eizan, now called Makenka and still being conscious, doesn't like this change and runs away. Meanwhile, Doro finds out that Hikari is Mai's sister, so he starts trying to convince her to become part of his team too, an idea which Mai does not like at all and doesn't give permission to her sister. But when Dr. Mud sends out three other cyborgs to search for Makenka, team Makendou will need to get into action to save the situation.
The OVA also includes a small teaser about Makeruna! Makendou 2 at the end of it.