Yeah

I didn't know that. Story has been interesting to the point where Iam.
As being curious about Shiryu...
Went with this team to 30 Sta Blackbeard battle, it did spoil me something before battle started
. I mean my only touch to OP universe is this game

.
Thanks to friend GAFer 6* Marco I could stall so that all my skills where ready at Boss.
1st Turn Boss (2 turns) seems to be immune to GPU

-> Shiryu fails -> S/L -> All attack normally.
2nd Turn Shiryu fails -> S/L -> I launch skills except f.Marco -> Cavendish does 669k damage, boss is around 30% HP left. Do I die or not?
3rd Turn -> Boss does Gloom -> Not sure if Marcos skill would override it or not? -> Shiryu fails not -> So can't test Marcos skil -> Beginners luck:
I think I could have killed Boss normally in 2 turns if I had launched Cavendish skill at first turn. Tho I don't know does Boss launch gloom in certain HP treshold or when is his 1st turn and does Marco's skill override it? And would Gloom really matter when Cavendish had QCK orb flashing eventho there was gloom.
Anyways S/L + Shiryu works. Now the question is, what I do with that new unit, is it only fodder for Legendary Blackbeard or actually useful unit? What is the boss droprate % in those lower sta fights?