It's undoubtedly a good story. I'd have given it a 5star if :-
1. They showed what happened to the younger brother or Atleast made him pay up. Similarly with The bad guy Joohoon. I mean he did rape the original Siwon and tortured him.
2. Joonwoon backstory (which the author mentioned not explaining)
3. The ending seemed a bit rushed.
Other than that it's a Gem of a story. It'd be great if we had more of this
At the End of the Road