Fire Release: Flame of Heavenly Discipline

Hiden: Powerful Lungs Technique
This jutsu cannot be used by anyone other than Saki Shiroshinku.

Technique Description
The famous Akimichi Clan is known for their Multi-Size Technique, where they use Yang Release ninjutsu to convert calories into size expansion. Similarly, the Shiro Clan uses Yang Release to increase their maximum lung capacity and breathing power.

Saki uses the Shiro Clans Hiden: Powerful Lungs technique whenever she uses her signature Fire and Wind Release ninjutsu. Powerful Lungs enhances the amount of Fire or Wind she can exhale in one breath and also greatly increases the force and power of the jutsu. By combining her jutsu, adding wind to her flames, Saki has already created and incredibly powerful combination; the flames get hotter and increase in size. Powerful lungs multiplies the penetrating force, quantity, and speed of the jutsu.

Additionally, because of the Yang Release mixed in with the Fire Release ninjutsu, the Flames that Saki and her clan can create all appear white. There are crimson red streaks and areas in the white flame; Saki's outfit and Clan name are attributed to the fire's unique color. Wind release can't change color because it's air.