Chakra

Stage / Realm / Level	Chapter	Notes
Chakra refinement	20	Kosuke first refines chakra using his new method; Aoba measures reserves exceeding those of a Chunin 20.
Chakra and Natural Energy fusion	93	Kosuke’s chakra merges with Natural Energy, producing a power distinct from ordinary chakra and Sage Chakra 93.
Primordial Qi	95	Kosuke names the new energy and tests its effects on movement and ninjutsu 95.
Qi Pill formation	107, 108	His Primal Mū Liquid condenses into a pill, which he tempers while surviving Lightning Tribulation 107 108.
Yuyuan Realm	109	Kosuke survives the tribulation and enters the fourth realm 109.

Formation and Circulation

Chakra is extracted by fusing Cellular Energy and Mental Energy in a specific ratio. Kosuke warns that increasing reserves requires developing both rather than exhausting the body through repeated refinement 5.
Chakra flows through pathways called meridians. Kosuke describes energy refined throughout the body converging into larger routes 8 9.
The Lesser Heavenly Circulation carries chakra from the Dantian up the back through the Du Meridian, down the front through the Ren Meridian, and back to the Dantian 9.
Kosuke’s proposed Greater Heavenly Circulation extends circulation through finer pathways across the body and toward its chakra points. He initially forbids others from attempting the untested route 9.

Kosuke’s new method works when he first refines chakra at age six, but he cautions that its safety for people who already possess chakra remains unproven 20.
A test of the Lesser Heavenly Circulation finds that it reduces chakra loss and concentrates the energy, potentially improving jutsu precision and taijutsu bursts. Kosuke also warns that it might slow or weaken large-scale jutsu 21.
An early Greater Heavenly Circulation test causes absorbed Natural Energy to rampage through volunteer Uchiha Mizuma’s meridians; he dies from the resulting mutation 22.
Excessive refinement can consume energy needed for a growing body’s development. Kosuke recommends measured physical training and work on Mental Energy, including study and chakra-control practice 5 6.

Energy	Distinction
Chakra natures	Kosuke identifies water, fire, lightning, wind, earth, Yin, and Yang among the natures he later fuses through his cultivation method 93.
Natural Energy	Exists throughout the world and is distinct from chakra; absorbing it without control can cause disorder, mutation, or bodily collapse 58 92.
Sage Chakra	Madara produces it by refining Natural Energy and fusing the purified result with his chakra. He later condenses it into liquid in his Dantian 122 123.
Primordial Qi	Kosuke’s fusion of chakra and Natural Energy can shift between attributes; he finds ordinary B-rank-and-below ninjutsu costs little of it 93 95.

Ninjutsu — Chakra powers techniques ranging from Fire Release to combined Lightning Release attacks 25 32.
Dust Release — Kosuke fuses Earth, Wind, and Fire chakra nature transformations to produce a matter-decomposing Kekkei Tōta 46.
Sealing — Mito uses a sealing technique to separate the Nine-Tails’ chakra into two portions with different properties 74.

376

Total Mentions

107

Chapters Appeared

3.51

Avg. per Chapter

Mina

Izuna

Kosuke

Mito

Madara

Sharingan

[Canceled] Naruto: Grinding Progress in Konoha