Picked it up because I like the anime. And I basically got to experience the whole world in a new light. The characters are straight out of the the anime and definitely embodies the representation.
The gameplay is fairly simple, as an idle adventures RPG. It's nothing too fancy, but getting to hear the VAs in the game was a nice touch. And the special move splash arts, really good. For the harder content you definitely need multiple teams built, but if you have them, then you are good to go. Definitely need team building, tanks, DPS, support, and heals and a must in harder content. You can't brute force them.
There a gear system, and a level system connected to your overall account level. Honestly not that bad all things considered.
Gacha rates are good. Plus you get a boat loads of free gems and such to make your pulls. Additionally you get guaranteed character banners and special banners to get characters. And you get multiple variants of the characters, which is nice, they had different skills sets and animations rather than being a reskin.
Overall I very much enjoyed it, but I wanted to see what else the world has to offer, therefore, I moved away from the game.