We got those a few months ago as some sort of reward for paying players. They update that exchange every month and add new girls. As far as I know they don't expire, I have had 120 for over a month.
We got those a few months ago as some sort of reward for paying players. They update that exchange every month and add new girls. As far as I know they don't expire, I have had 120 for over a month.
You're playing the DMM version of the game. You'll want to ask that question at the DMM part of the forum over here.