Send request to hunter, welcome to DMM where you can experience the same yet different FKG.
Well I don't think DMM is hard mode, if nothing it's easy to go F2P since you got loads of freebies, assist item, more friends slot means whales will gladly help even the weakest newbies. These whales will pull you through many hard stages with ease, you just have to leave pest infested route to them while you pile up your squads to gang up on pest. I play DMM for 2 months and my girls are already stronger than Nutaku counterpart. And I played Nutaku for almost 5 months now.
It shouldn't, just that perma-reissued in DMM got updated not too frequent.