Daiichi Haruka

Daiichi Haruka arrives on the Moon and soon encounters V-Mei and her granddaughter Guriguri of the Long-Ears race, who are at war with the Jadou Clan. Sensing power within him, V-Mei gives Daiichi a magic gun and identifies him as a chosen Madou Warrior. The weapon lets him summon Granzort, the Madou King of Earth, to battle the Jadou Clan's monsters.