Originally Posted by Zandel

Only way to start over in Nutaku games is to create a new Nutaku account. I did actually do this a few times when first starting FKG myself. A good option is starting 3-5 accounts and playing them all for about a month to see what girls you have drop from the first few Gatcha rolls (you get a LOT of gems early on) then simply pick the account you like best and stick with that.

Playing 3-5 fresh accounts at the same time sounds like a real pain in the ass.