What is a duty?
a vote
a tax
a law
a crop

A duty is a commitment or expectation to perform some action in general or if certain circumstances arise. A duty may arise from a system of ethics or morality, especially in an honor culture. Many duties are created by law, sometimes including a codified punishment or liability for non-performance.

Explanation:

me with my last question i posted

he is a vloger now and he could't be vlogging everyday when he had to do the casting for minato.