Strength Rankings (Individual) :-
E - Rank : Academy level
D - Rank : Genin
C - Rank : Chunin
B - Rank : Special Jonin / High Chunin / Normal ANBU
A - Rank : Jonin [ Asuma, Anko, Kurenai, Elite ANBU]
S - Rank : Clan leader level [ Hiashi, Fugaku, Danzo, Kakashi, Gai(Till 6th gate) ]
SS - Rank : Kage [ Tobirama, Hiruzen(Prime) , Minato, Pein]
SSS - Rank : Hashirama / Madara
X - Rank : Hagoromo / Hamura
XX - Rank : Kaguya
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Danger Assessment :-
Genin : D-C rank
Chunin : C-B rank
Special Jonin : B-A rank
Jonin : A rank
Elite Jonin : A-S rank
Akatsuki members / Seven Ninja Swordsman of the mist(Former) : S rank
Kages : SS rank
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Acceptable mission rank :-
Genin : D(Alone), C(team)
Chunin : C(Alone), B(team)
Special Jonin : B(Alone), A(team)
Jonin : A(Alone), S(team)
Elite Jonin : S(Alone)
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Mission Types :-
D - Rank : No risk [ Painting, cleaning, Babysitting, Lost and Found ]
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C - Rank : Little risk (involves killing) [ Being Bodyguard, Bandit extermination ]
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B - Rank : Moderate risk [ Involves fight with C-B rank ninjas ]
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A - Rank : High risk [ Involves fighting with B-A rank ninjas ]
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S - Rank : 75% Death chance [ Fight with S ranked individuals ]
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Mission Rewards :-
D - Rank : 3,000 - 5,000 Ryo
C - Rank : 5,000 - 20,000 Ryo
B - Rank : 20,000 - 100,000 Ryo
A - Rank : 100,000 - 1,000,000 Ryo
S - Rank : 1,000,000+ Ryo
[ For a good lifestyle 60,000 Ryo is enough for one person. A decent meal costs about 200 Ryo ]
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Beasts level :-
D - Rank : Chakra infused small animals (No intelligence) [Rabbits, Rats, etc... ]
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C - Rank : Medium sized chakra beasts (Little intelligence) [ Goats, Deers, etc... ]
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B - Rank : Big sized chakra beast (Intermediate intelligence) [ Wolfs, Tigers, Bulls, etc... ]
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A - Rank : (High intelligence) [ Normally live in clans, or societies of their own, Can form summoning contracts ( Itachi's crows) ]
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S - Rank : (High intelligence, even young ones have high intelligence and are capable of human speech) [ Have their own summoning realms, Toads, Slug and Snake. Have access to Nature energy. Can form summoning contracts (Gama-bunta, Hiro, Ken, Katsuyu, Manda) ]
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SS - Rank : Tailed Beasts [ 1 tails - 7 tails ]
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SSS - Rank : Tailed beasts [ 8 tails and 9 tails ]
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XX - Rank : Ten Tails
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Weapons Level :
D - Rank : Kunai, Shuriken, Ninja wire
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C - Rank : High Quality Kunai, Shuriken and Ninja wire, Normal Katana, low quality paper bombs
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B - Rank : High quality katanas, Chakra conductive weapons, medium quality paper bombs.
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A - Rank : Weapons made of at least 40% Chakra conductive metals (Asuma's trench knives), High quality paper bombs.
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S - Rank : Seven Swords of Mist, Kusanagi blades(Blades made by extinct Kusanagi clan, like orochimaru's extendable katana, Sasuke's Chokuto)
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SS - Rank - Totsuka sword, Weapons of Sage of six paths