If you do all the amity quests, you will earn about 500 black pearls. And it is for free too!
The fastest way is to use stamina for the interest quests to level up amity. Each interest quest uses 5 stamina to raise 3 amity.

You can also buy gifts from the town merchant and give them to the amity npcs.

Video:
https://www.youtube.com/watch?v=cANiUTrGUQo

Of course, if you like the game and can afford it, kindly buy pearls to support the developers.

Afterall, Pearl Abyss needs to pay salaries to their staff, pay rent, pay the bills and so on...

✨🤗group hug🤗✨

Sincerely,
🌤😇HopeLight Guild 😇🌤
https://www.youtube.com/watch?v=1oHWWpWbWFg

Other ways to earn more free black pearls:

https://www.youtube.com/watch?v=nedZ5Yfup70

How to earn 500 - 1000 black pears as freetoplay:

https://www.youtube.com/watch?v=B14bjbfdWWE

😃Enjoy!😃