Possibly the greatest gacha game in terms of worldbuilding and rich original creative history and lore, it features some of the best-designed characters I've seen, amazing top-notch tower defense combat, and the widest range of music and lore of practically any game I've ever played. From Mafia, Gangsters, Prison Break, Fire Fest, Bloodborne, NFL, China, and Brazil (props to Haedal for the naming lol 😂) but seriously this game is a gold mine, and since the gacha is so forgiving I don't even think it's much of a downside.
The game also has practically all genres of music from rap (yes, I mean actual authentic western rap one of the characters in the game even has a shirt based on Tupac), Opera, Pop rock, Orchestral, etc etc