I think super Manyu gives another +3k hp, 1k atk, and 400 def to the girls.
And confirmed as this pic showed.
Attachment 9424
Edit: Just one word. Unreal!
Attachment 9423
This boss has 'metamorphosis' and can change form after you whack its first form. If anyone play nuke team... well you just lost. And boss has accuracy buff too so dodge team can have problem with it.
At least you don't lose anything when losing.