Fifth World: Raging Demon King
There is no greater pain than knowing that all your plans for the past few years were all for nothing. It's like a pregnant woman carrying around a big belly for nine months only to be told its gas after going through labour pains.
Imagine all that energy you expanded into making your dream a reality was flushed down the toilet in a matter of seconds. This is the reason why Miyu Ren was throwing the world's greatest tantrum.
He gave up Zhao Zhi even offering him to his apprentice because the king was still alive and he was the former king's only offspring but it turned out he was misled. The current merman king was only related to the former king by marriage. The true heir was the queen who should have been his target from the very beginning.
This was a perfect example of when a player gets played and he was played real good. Miyu Ren had completely lost that calm demeanour of his transforming into a deranged lunatic.