I've been playing for more than 2 years. The quality of the story dropped quite a bit. They also announced that they will not add character voices anymore. So it kinda makes me not want to play anymore. I'm not f2p but you can play it as a complete f2p. You need to save for cards you really want. But there are some events like top up events or ER card events which are batle pass based, you need to pay in those events. Overall a fun game, but my enjoyment decreases day by day.