It's generous enough if you aren't aiming for every premium character. If you play all the story content and events, and are doing the daily quests, you'll pret

It's generous enough if you aren't aiming for every premium character. If you play all the story content and events, and are doing the daily quests, you'll pretty much earn enough for a guaranteed 5* (80-90 pulls) in about 6 weeks (the length of one version update). So if you're a free player, you can save up for a character you really want, or just pull and be content with whoever you get.