Download QooApp from this link apps.qoo-app.com/app/880
Download and install QooApp. Please make sure to allow 'Unknown Sources found in your phone's Settings' under Lockscreen and Safety.
Download the game from this link apps.qoo-app.com/app/3680
Original TKRB Pocket app in Google Playstore here: play.google.com/store/apps/details?id=com.dmm.games.touken
No VPN is needed to play the game even though it's stated in QooApp.
QUICK FAQ (PLEASE READ THIS FIRST BEFORE POSTING A QUESTION)
If you're experiencing these:
slow sync-ing and data downloading process,
stuck at loading % or spinning flower,
black screen when trying to load at start,
these solution seem to work for others most of the time:
Make sure your phone space is enough to accommodate the data (about 1.8gb) by uninstalling some other unused large apps.
Make sure your internet connection is stable and fast.
Try closing the app (kill the app) and reopen app to see if there's any changes (the progress is saved).
Clear app cache (NOT Clear Data).
Try uninstalling and reinstalling the app (only do this if you have the account sync to DMM browser account or you will lose your current account).