How to Leave a Clan in Pet Sim 99

To leave your clan in Pet Simulator 99, open the menu, click on the blue shield icon to open up the clan screen, then click the red "leave clan" button to leave the clan.

When you leave a clan, you do not get any of the gems you donated back, and you also lose your clan boost, so consider these factors before disbanding.

If you want to leave a clan you created, you have to kick everyone out first, and there is currently no way to make someone else a clan leader.