Sputter

Using a pre-existing source, the user creates a sentient flame, which takes the shape of a small floating blob that generates the sound of crackling fire. The Second Generation user then can easily control the said creature. When combined with the flames of the Third Generation and Meramera, the technique can produce a gigantic, horrendous-looking fireball.

Trivia

 * The creature's appearance is inspired by Maka Albarn, the main character of Soul Eater, Atsushi Ōkubo's previous series.
 * Pusupusu ("プスプス") is an onomatopoeia of crackling fire.
 * The huge fireball creature, produced using Pusupusu and Third Generation flames, can somehow bleed, despite being made out of fire. This is most likely for comedic effect.