Easily a pay to win game.. you will run into a power wall in like half an hour. Rates are terrible, and with no pity. Summoned over 300 units and not a single SS. Everything seems to require you to be strong to even get awarded so don't bother worrying until a week later.. Daily activities take like 10 minutes, and events seem to be only good for mid-end game players..no don't even bother with those. All in all, nice graphics (mostly SS units and their costumes) ok storyline and very basic game play.
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