Became attracted to this game knowing it was a gacha-system idle game AND of one of my favorite anime, so those were just the two simple reasons I decided to try it. The tutorial was overall understandable, making it relatively easy to learn how the combat mechanic works when you’re introduced to it firsthand (and if you have the right specific few characters, the mechanic actually becomes even MORE satisfying and crazy, EX. Uta’s skillset.) Also, the rewards that you obtain out of both the general campaign system as well as various other bosses and such are pretty generous; you’ll be able to progress your characters pretty fast. And as for specifically diamonds as well as summoning tickets, it’s essentially the same thing—you’ll have no problem building those up to be able to summon more characters, or even just for spending them on materials instead. For the characters themselves, I love that they genuinely look exactly as the characters in the anime, also functioning very clean and smooth.My only complaints are two things. For one, the occasional crashing—though it’s not really that much, sometimes it’s just inconvenient when I’m in the middle of trying to complete something. The second thing is the obvious false advertising regarding codes; they don’t give you 1 million diamonds, naturally. It’s just kind of annoying and a turn-off to be told of getting something that you don’t in an advertisement that is supposed to represent and introduce your game to more people, even if the game itself is honestly amazing regardless. Overall, I really like this game and recommend trying it. Have a good day/night!