i think me and seshi are the only ones that really follow one piece but.
i havea a theory that brook knows shanks.
and i will show How Brook is connected to shanks.
in a few one piece episodes.Brook talked about a red-haired pirate who he traveled with 2 yrs ago but then one day became so great he traveled with gold Roger.How would he know shanks if hes been trapped on that island for like 10 years? My theory is Shanks and Brook use to work together.Shanks worked with gold roger.Brook says he doesnt know anyone named Shanks.
i tihnk Shanks came to that Island and didnt use his real name.Brook said the guys name was ace.Ace is luffys brothers name but ace doesnt have red hair and he never worked with roger.So here
Brook-island for ten years
shanks-comes 2 years later and uses an alias for some unknown reason
wll heres how i think shanks and brook are connected