I wish they'd refund the pass cost or something...

If you've played Crossfire, you might know this, but in Crossfire, after buying a pass and leveling up to a certain point, you get the pass cost back (300 Gold spent -> 300 Gold refunded). I really hope they bring that system to Raid Masters too. (It's actually quite expensive at ¥1,380...) (Like ~Gems spent -> Gems refunded)