I played for nearly a year, ended up quitting because of battle system, summon system and other features that started to become very P2play, recommended if you love the anime and you dont mind the Gacha part

At first the game was so addictive that I played it around for 10-11 hours a day, but soon thr campaign ended at least for the f2p players and there was nothing to do in the game than to log in collect your rewards and log off for the day. This cycle continued for a month and when new content was not released it got boring. I heard new things has been added but I'm not returning

I love this game, it has a nice vibe/artstyle, but I do have some issues with it. The campaigns take a long time due to the "required level" limitation and it's hard to level up when the quick adventure button gives little exp; It makes the progress quite slow, but I suppose a little bit of patience wouldn't hurt. Also, the tutorial takes long and it's quite a hassle when you're an old player so it would be nice if there was a skip tutorial option.