It's a good game but it's very hard to grind on, especially in events because you need to stay on top and they always manage to make you want to spend on both events and gacha (I've never done so because I played it casually), sometimes it can be hard to pull for anything. They do give free pulls on some gachas but and there are some that you can pull for the earned currency but it's very scarce so it's an alright game to decorate your character