Gonna keep the review simple. This game is just wow . Pixel art, story, character voice line are amazing Gacha system which is generous, everything about this is great. There is just few negatives ,
•After finishing main story there isn't much thing to do except for farming repeatedly and doing the 5x PvP matches .Basically lack of content. Recently they are bringing in new contents like events and guild donation system. In future we will definitely will get lot of contents.
•Progression in game heavily depends on farming for everything .Mana/euips/skill mats etc. To farm we need stamina(Which you have to wait to refill).Personally my stamina is 120/120 and i can do farming 3-4 times per day 120x3/4 worth of farming. Stamina potions are rare as well. So basically if you decided on a team and planning on maxing that team you will have to farm all these stuff for minimum of 2-3 weeks maybe even more if your luck with equips aren't good.
Except these I got nothing to say as a con. Totally a lit game with waifus , graphics, character voice lines and cute pixel character design, puzzle mechanics .Lol there's no end to these positives on game . Highly recommended to try it!!!!!