The official website
of Kenzen Robo Daimidaler
announced a mini-OVA titled "Dai tokkun! Hi-ERo Ryuushi Power" (Great Training! Hi-ERo Particle Power) as a part of the anime's first Blu-ray/DVD volume.
The first volume is scheduled to be shipped on July 25, 2014. The TV anime recently debuted on April 5th.
, Official website
Kenzen Robo Daimidaler: Dai Tokkun! Hi-ERo Ryuushi Power