After the battle, the woman reveals herself as Maya, and tells Tenma he is one of twelve warriors, split into three tribes (Flame, Wind, and Earth). But before she can explain more, another figure appears from the shadows—a cold, blue-eyed boy named Ryou, who awakens as , the Wind Tribe's swordsman. Ryou declares Tenma an enemy, hinting at an ancient war between the tribes.
The episode opens with a meteor shower over Tokyo—but these are no ordinary meteors. They are the scattered "Seed Cells" of an ancient Earth defense system. Years later, Tenma Kujo is a loner with a short fuse, working at a garage and getting into street fights. He has no family, no past, and strange burn scars on his arm.
Maya almost smiled. "That's exactly what the Flame Tribe's enemy wants to hear."
"No. But the Seed chose you. Just as it chose him." She nodded toward a rooftop. A boy in black stood there, arms crossed, a gust of wind kicking up dust around him. Then he was gone.
When the Host corners Tenma, instinct takes over. He raises the Loader, and flames spiral around his body. With a roar, he transforms into —the Flame Gransazer, clad in crimson armor wreathed in fire. The battle is raw and brutal: Mithras struggles with his new form but unleashes a fiery punch that shatters the Host’s core.
"That power… it's older than your anger," Maya said, stepping over debris without a sound.
Tenma Kujo, a fiery young man who trusts only his own strength, discovers he is the reincarnation of a legendary fire warrior—just as alien bio-weapons called "Hosts" begin their assault on Earth.
– Unlike controlled, heroic flames, Tenma's fire is wild, tied to his anger and passion. Episode 1 establishes that learning to control his fire means learning to control himself.