My idea of duty is that you don't really have to do it. It's optional, you know?
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
You can follow me on a voluntary basis.
Please choose any 8-digit number.
Do I legally have to tell you my name and address, or is it optional?