Six years after, he found rhino pirates
As Brook sat on the figurehead of a ship, several people could be seen working behind him.
He had just found a ship passing through in his range of observation haki.
So, he went to greet his guests, as the white fog was like his own house.
He launched into the sky using Geppo, and after a while, he was already upon the ship.
The ship looked relatively intact, after observing the crew he saw only around 30 people working, the ship was a bit smaller than his current ship.
After observing the ship for a while, a muscular man resembling a Viking with a long brown beard, holding a golden axe came in front of him and said
"State your business" knight
(Brook was currently covered in a huge piece of ice that resembled heavy armor. It was one of the things he did when bored creating bone structures from sea king and designing armor by freezing them.)
After contemplating for a bit Brook answered
"Umm, I am not a knight but a pirate, does that answer your question?"
Without any words, the Viking lookalike immediately attacked in a horizontal sweep with his axe.
The axe got embedded around 20cm in his armor and got stuck in his left hand.
Brook reached out his hand and touched the handle of the axe. The axe slowly started to freeze, compelling the man to let it go.
Brook observed the axe and took its tip out from his armor.
He then covered it in ice. He dropped the frozen axe and stepped on it, shattering it into white dust.
He looked up again with two green dots visible through the ice helmet and said
"Who is the captain of this ship"
As the deep voice of the armored figure resounded, all eyes fell on the brown Viking.
Brook also looked at the Viking through his helmet.
"Splash"
As everyone looked at where the Viking stood, there was now a bulked armor standing with one of his legs in a kicking position.
The Viking was nowhere to be seen, with the only indication of his disappearance being a splashing sound.
Brook looked at every one of the remaining pirates and asked,
"so I will be the captain of this ship from today onwards, any problem"
A similar-looking Viking shouted in rage and started charging toward Brook.
Before he could cover much distance his face was met with a giant great sword.
"Schwing", "thud"
The sound of cutting and crashing could be heard, as the pirate was bisected in two horizontally.
Looking at this scene of a knight covered in shining blue armor with blood and gore stuck to it, everyone felt silent and started to shiver.
The pirate calmly spoke,
"to the last question, it's either yes, I Wana die or no problem, so choose fast"
Everyone in the crew answered and immediately shouted" No problem"
After that taking his new crew he went to another ship.
The ship of rhino pirates where the Acreus and Bolton we're currently staying.
He didn't want to expose his original ship, as it was still needed later.
So he transferred his two guests to their original ship.
(Brook kept track of the original ship of the rhino pirates by putting one of his bones, along with a small part of his soul there. This allows him to track his soul like a Vivre card would. )