Fire Dragon's Roar (火竜の咆哮 Karyū no Hōkō) is a Fire Dragon Slayer Magic Spell.
The user first inhales, gathering fire in their mouth, and then releases such fire in the direction of their opponent, creating a large, exploding fireball which damages and burns the opponent. This spell can be performed two ways: the first, and more "complicated" way involves the user putting their hands before their mouth, in a pose resembling that of a trumpeter, before releasing the fire, prompting it to be expelled between their fingers. The flames produced by this version start out as a very thin stream, enough to be fit between the user's fingers, before suddenly enlarging to strike the opponent. The other simpler, and seemingly faster way, simply has the user quickly gathers flames in their mouth and then releases them, with no seeming stance required, producing a much larger burst of fire.
|Basic Spells||Fire Dragon's Brilliant Flame • Fire Dragon's Claw • Fire Dragon's Crushing Fang • Fire Dragon's Flame Elbow • Fire Dragon's Grip Strike • Fire Dragon's Iron Fist • Fire Dragon's Roar • Fire Dragon's Roasting Bath • Fire Dragon's Sword Horn • Fire Dragon's Wing Attack|
|Advanced Spells||Crimson Lotus: Exploding Flame Blade • Crimson Lotus: Fire Dragon's Fist • Crimson Lotus: Phoenix Blade|
|Dragon God Spells||Dragon God's Brilliant Flame|
|Planetary Flames Spells||Planetary Flames: Exploding Flame Blade|
|Fire Dragon King Spells||Fire Dragon King's Brilliant Flame • Fire Dragon King's Demolition Fist • Fire Dragon King's Purgatory • Fire Dragon King's Roar|
|Fukuro's Spells||Fire Ho Ho Hou • Fire Dragon's Roar|
|Velveno's Spells||Fire Dragon's Roar • Fire Dragon's Iron Fist|