SPOILERS AHEAD:
The ending left a lot to be desired in that all of the characters kind of end up in the same spot they started. Beomjin still has his powers, Yoonjae never recovers his memories, Yoonjae's brother remains stuck in the underworld, the tiger remains a powerless drunk etc. Unfortunately I am limited in what I can say because of the character limit. But overall there were just so many things left unanswered.
SPOILERS AHEAD:
I have so many issues with this story ending ugh:
-How many times are they going to kill and revive Julius?
-The balance is not an inherent part of the world, but rather a random monster. And the goddess/dragon cannot kill it?
-The wings: Do they even have free will?
-It was unsatisfying that the MCs were pawns in a war where the villain didn't have a grudge against any of them in particular.
-Cringy dialogue
-Leticia is a mary sue. Everything revolves around her.
The Art of Taming A Tiger