クイズfor BTS 防弾少年団

For ARMY of Korea's popular hip-hop group BTS Bulletproof Boy Scouts (also known as Bangtan)
It is a free quiz app that I made.
Difficulty ranges from beginner to advanced
I would be grateful if you could install it to kill time.
If you are confident, please try your skills at a higher level.
We look forward to your review if requested.