Uhm, Making a google account is much more easier than making facebook account that ask for your address, phone number and bla bla else. Google just require for your first&last name (you can fake them if you want to) then a gmail name, after that a password for your gmail

Make Asobimo account... 
If you play more of their games it makes it easier... you wont need Gplay, and you wont be at risk of getting locked out via facebook.

Yes i used to use FedBook for logging into games. My FedBook account got locked and so did every game i used FedBook to log in with..  many games had IAP i purchased too, lost about 200$ worth of sht... still locked out of that account and FedBook wont do anything to reconcile.