I believe the answer is: Custodial responsibility
Custodial responsibility refers to a collection of things that need to be fulfilled by a certain individual after being granted a specific status.
These custodial responsibility does not necessarily written directly on the law because it's often implied alongside with the given status
.
Goods that are considered to be needs tend to be inelastic when the price changes.
Kabuto vs naruto?
naruto won with rasengan
kabuto won with medical ninjutsu
Depending on where you are you either need to study and pass a test or pay a fee to register and licence yourself.