Leave guild during the war
From Realera Wiki
Basically you have 2 options to do that:
1. If no guild wars were accepted within a 7-day period, you will have the option to leave it.
2. Order name change in our store, go Game Store (website) -> specials -> Character Name Change and don't forget to check the option to kick from current guild. (cost 300 points)
or alternatively wait until the war is over.
