Ouryu has a strange aura that surrounds him and protects him from damage. He will occasionally lift up and stomp down before shooting rays of electricity from his horn. When he does this, place a bomb by his tail, and the dragon head on the tail will stoop down to eat it. This will make Ouryu temporarily vulnerable to normal bombs, and the player can attack him freely. After he loses the first four hearts, the aura will be gone permanently. Sometimes he will move to the center of the area to stomp a large shockwave into the area. Damage him with a bomb or use the block command with Ceedrun to avoid being injured.