is BS right wing end boss?

[Chinesehero]

normal?
I have hit this boss 6 or 7 times

the nearby 2 times I hard kill it. seem red aura not add dmg to melee now? instead of dmg buff it reduce our ap inside red aura

before I can hit over 1k inside the red aura now only 200-300

is that normal now???

it become the hardest boss now

[Chinesehero]

just now i use good mechanism hit it still easy
but red aura still not give dmg buff to melee