Just from joining an organization, it will grant you an automatic boost in rank in 3 predetermined skills. There are more organizations than the ones listed, but their means and process of entry are a secret.
ANBU Black Ops: +1 Investigation, +1 Perception, +1 Stealth
Sensor Division: +2 Perception, +1 Arcana/Jutsu
Sound Organization: +1 Deception, +1 Survival, +1 Nature
Seven Shinobi Swordsmen of the Mist: +2 Stealth, +1 Intimidation
12 Elite Guardians: +1 History, +1 Insight, +1 Athletics
Cypher Division / Intelligence Division: +1 Jutsu, +1 Religion, +1 History
Gato Company: +2 Intimidation, +1 Animal Handling
Medical Corps: +2 Medicine, +1 Nature
Worshippers of Jashin: +3 Religion
