Read from yahoo news that it looks like the anime will have 24 episodes at least:
Robert Burnett, the animatic editor for DOTA: Dragon's Blood, revealed that the show has been in the works since 2019, though the series was apparently already being developed years before. In addition, he also revealed that he has worked on a total of 24 episodes for the show, meaning DOTA: Dragon's Blood will have two more seasons of eight episodes each following its initial release with Book 1 and is animated by Studio MIR, the studio behind Avatar: The Legend of Korra and Voltron: Legendary Defender.
I just noticed the sadistic and rather bloodthirsty Luna is voiced by Kari Wahlgren that did the voice for Rogue galaxy's Lilika and Princess Ash in FF 12 lol never thought she would be this sadistic lol.