Rage of the Blue Flame

Rage of the Blue Flame is a Legendary Costume for $π$, released alongside and  in the first half of The Longing of the Rising Flames update. It is obtainable by obtaining Fire Spirit Cookie's Blue Flame Hierophant.

Story
''The only thing remaining in $π$ is pure, intense anger. The blue flames flashing whenever it swipes its claws are so beautiful, it's said there are creatures drawn to them, completely mesmerized... even though they might not survive getting close enough to feel the warmth of those very flames.''