Is simple: the boss has 3M HP in our server, but originally he should have 1,302,055m HP like in kTOS.
I was doing the quest and my Shinobi has 30k HP, he in 3 hit kill me.
In kTOS the boss is more weak, here’s the proof:
iTos: https://www.youtube.com/watch?v=rfLdzqerlh8
I think he needs a fix ^^