This is a gacha game but it's still very possible to progress in this game and the normal non-rpg pvp fighting game content is completely untouched and unlocked from the very start. The game is pretty fun but can be fairly grindy. Learning the rpg mechanics will help you beat some of the tougher story fights and some of the hardest challenges in story/mission segments aren't really p2w because they often expect you to use lower tier versions of characters.