Shanks can regenerate his arm whenever he wants to.
The gorosei’s regen is imo either a celestial dragon ability or a haki ability. In either case I think Shanks has it.
He just chooses not to regenerate his arm because he likes pretending that he’s weaker than he really is. When he eventually goes all out, I think we’ll see him regenerate the arm.
imo Luffy is the one who will 1v1 him and force him to regenerate the arm.
The gorosei’s regen is imo either a celestial dragon ability or a haki ability. In either case I think Shanks has it.
He just chooses not to regenerate his arm because he likes pretending that he’s weaker than he really is. When he eventually goes all out, I think we’ll see him regenerate the arm.
imo Luffy is the one who will 1v1 him and force him to regenerate the arm.

