I Survived in Anbu to Become Super Kage

An Anbu squad leader held significant clearance; Yako could freely learn any of Konoha's mainstream elemental ninjutsu from his squad's scrolls.

Keeping in mind the Fire Release he had seen in previous battles, Yako picked out two high-power techniques: the Great Fireball Technique and the Fire Dragon Flame Bullet.

The Great Fireball Technique was the signature ninjutsu of the Uchiha clan, requiring six hand seals.

This technique was widely spread; many Fire Release ninja in the village had learned it.

The Fire Dragon Flame Bullet was the signature ninjutsu of the Sarutobi clan, requiring seven hand seals.

In combat, Yellow Dog only used taijutsu and the Fire Dragon Flame Bullet.

Learning these two techniques would allow him to utilize chakra nature suppression to great effect when facing Wind Release ninja.

The difficult part was elevating a Fire Release ninjutsu to Mastery.

At Mastery, a technique could be released with just a single hand seal, just like Yellow Dog did.