Nen Classification System
In this universe, the mastery of Nen and the natural talent of users are evaluated based on several criteria, including the amount of Nen at awakening, the time needed to control their aura, and improvements made over one month. Here is a detailed overview of the classification system.
the nen and the vital force of the user each person does not have the same amount of energy. (AURA)
Nen Amount at Awakening
S: 3000 - 5000+ units
A: 2000 - 2999 units
B: 1500 - 1999 units
C: 800 - 1499 units
D: Less than 800 units
Time to Master Aura
S: Less than 10 minutes
A: Less than 15 minutes
B: Less than 30 minutes
C: Less than 40 minutes
D: Passes out due to aura loss or must be knocked out to prevent death
Aura Improvement Over 1 Month
S: Doubles his aura and more (e.g., from 3k to 6k )
A: Increases by 70-80%
B: Increases by 60-69%
C: Increases by 50-59%
D: Less than 49%
Overall Talent Evaluation
To evaluate the overall talent of a Nen user, we combine the results of these three criteria according to the following rules:
3x B = Talent B
2x B and 1x C = Talent B
2x B and 1x A = Talent B+
2x A and 1x D = Talent B+
Example Profile: Zeo
Basic Information
Nen Type: Enhancement
Nen Amount at Awakening: 1500 units (Class B)
Time to Master Aura: 25 minutes (Class B)
Aura Improvement Over 1 Month: 55% (Class C)
Overall Talent Evaluation
Nen Amount at Awakening: B
Time to Master Aura: B
Aura Improvement Over 1 Month: C
Combining these results:
2x B and 1x C = Talent B
Example Profile: Alex
Basic Information
Nen Type: Emission
Nen Amount at Awakening: 2200 units (Class A)
Time to Master Aura: 12 minutes (Class A)
Aura Improvement Over 1 Month: 75% (Class B)
Overall Talent Evaluation
Nen Amount at Awakening: A
Time to Master Aura: A
Aura Improvement Over 1 Month: B
Combining these results:
2x A and 1x B = Talent A
Example Profile: Lina
Basic Information
Nen Type: Manipulation
Nen Amount at Awakening: 1700 units (Class B)
Time to Master Aura: 21 minutes (Class B)
Aura Improvement Over 1 Month: 62% (Class C)
Overall Talent Evaluation
Nen Amount at Awakening: B
Time to Master Aura: B
Aura Improvement Over 1 Month: C
Combining these results:
2x B and 1x C = Talent B
This classification system allows for the assessment of a Nen user's capabilities based on their initial skills and progress. Growth potential is as crucial as initial power because it indicates the user's adaptability and training efficiency.
here is a system of classification I remind it classifies the talent of an individual but does not weave his life for him I must look at other video to improve my understanding of the nen on all the calculates the math of the nen.
the talent grid and use it to differentiate talents in quantity of nen, speed of control and the fact of increasing the quality during the month it is the determination of the work that is limited to the hunter who learns nen from a master of nen. the talent of killua and crollo S that of gon, meruem and Tserriednich would be s+
Weekly Power Status
-- Power
Ranking 
-- Power
stone