This is definitely not very f2p friendly. The rewards half the time feel unrewarding. The pricing even for a single item is ridiculously expensive. I guess this game only cares for whales who put crazy amount of money into a gacha game. The training system is a joke. Not only do you fail the training for a card but they also keep your points for attempting. The mechanics of this game is set up to make you have to spend money on literally everything you're doing.