There was an OAV released for this series : 勇者指令ダグオン 水晶の瞳の少年 (Brave Command Dagwon - The Boy with Crystal Eyes) which contains two episodes. This should be S0E01 and S0E02. However, we can't add them because the series is locked. Can someone unlock this or add the missing episodes? TheTVDB already has them: https://thetvdb.com/series/brave-command-dagwon

Thanks!