It's a turn based MMO JRPG with gacha.
Now the gacha rate is ok but I'm not really a fan of having equipment & weapons separated.
Another thing I'm not fond of is that you need paid gems for fast passes to level up easier (after reaching lvl 50+).
The graphic's alright, kinda looks like an old PSP game.
As for the story... It kinda plays like God Eater, 1st; get your mission, 2nd; go out to hunt down monsters & 3rd; return to HQ. The difference is that the story here didn't really draw me in. It lost me at chapter 3.
The only interesting part for me was the prolog.
Also class don't matter as you can unlock all of them after the tutorial. It has no impact on the story as none of the captains recognize you as a member of their units, which is a shame tbh.
I did enjoy the cutscenes though, they were nice to watch.