Ripping from APK android, Assistance Required

[Aquaileron]

I would say use Assetstudio would be your best bet if the game runs on Unity
Doesn't Kuntori Wars have assets it has to download from the internet? (Due to the content in the game at least, I'm assuming this is just mobile Sangokushi)
In that case I'm worried you might have to root your device to get the proper files. Or worse, it could be a Puni Puni case where the game will delete and/or ban your profile entirely if it knows you've been poking around files.