that pose looks familiar...

Yeah, but this is more sexy than Jonathan Joestar.

It's sexy. But it ain't no Joseph.

ジョジョ立ち風　　　　<= Author's comment. Jojo pose confirmed.

It is "Jojo pose" as in being from the JJBA series, but it isn't a pose performed by a Joestar.
Its Caesar.

Mcworld said:
It is "Jojo pose" as in being from the JJBA series, but it isn't a pose performed by a Joestar.
Its Caesar.

4° Volume, JJBA Phantom Blood.