This game is in a very special place, you can see from a mile their target audience, but it doesn't feel "cheep".
Like almost every gatcha game, you can spend hours to earn something form his gatcha, or just spend money, and like some gatchas, you can choose (mostly) what to choose between those two options, and they're at least generous with the ones who decide to grind daily, letting you auto-play, skip things, and just lay back and grind.

Mac Rosetta