A letter to reader!

" Everyone has to pay for what they get !"
Another Murder! who is the planner?

" If you can , Catch me!"
"Murders bring peace to me"
" Hahaha! Here I am with another success!"

Cops were continuously failing to catch the murderer.

" You won't be able to catch me ! NEVER."

Namjoon took this letter as a Challenge.
" I WILL!!"