I just bought this game last night. I will be making a helium save for this game.
I will upload the untouched apk as well, but do know this, Lucky Patcher for non root use can not bypass the license check in Kemco games.
The Helium save i will provide will place you past the impossible battle. So all you will have to do is play until that part, then load my helium save to bypass the license failure and impossible battle.