Ratings : 2.3
Graphics : Good. Cute characters. Pleasing voice acting. Standard art.
Gameplay : B O R I N G. No seriously, it creates milestones in idle gaming. Basically its 'Merge Heroes'. You need to wait (not for long) for balls and coins to merge flying caped chibis till you get to 10th merge level in order to get a hero. Then you need the same hero to evolve. Then you need more resources for Academy upgrade. Basically you are the Hero academy manager cum evolver
Music : Simple and relaxing
Storyline : You get a brilliant half Honkai like opening movie..then..bye bye. Just merge and evolve and upgrade and wait
Gacha : Good. SSRs are easy to get.
If you really are a busy person this game is for you, but since leaderboard exists..you definitely need to spend time on this boring game.