[spoil]
credits : Aohige_AP
Source: Ap forums
Arlong lets go the soldier as Jinbe told him.
Arlong calls him brother (aniki, older bro, somoene you look up to), but
Jinbe calls Arlong trash, dirt, etc 
As the Adventurer Fisher Tiger comes back from his adventure, Jinbe and Arlong both calls him brother Tai (aniki, again)
Tiger is greatly admired by the people of the island
Description of Fishman Town
The place was initially a massive orphanage.
But soon the place degenerated, and the management couldn't handle the place any more.
The outcasts of the Fishman Island started to take residence there, and the place became a lawless slum
Tiger grew up as a leader in Fishman Town, but eventually left the country to become an adventurer
The next brother in charge, Jinbe, became an elite soldier in the national guard
Arlong, who was the most violent one of the three, became a pirate and ravaged the nearby areas in the bottom of the sea
Macro the coward, although was a fishman, became a kidnapper.
Everyone went their ways...
But one impactful event changed all that. The assault on Mariejois.
Fisher became known as both a hero of slave liberation, and a terrible criminal
Those who looked up to him in the Fishman Town couldn't let Tiger die at the hands of World Government, all gathered under Tiger.
Jinbe: Today is the last day as a soldier, I quit!
Arlong: Let's go, men!!
And so The Pirates of the Sun was formed. To make no distinction between the former slaves and those who were not, the Sun Tatoo was imprinted on all of them to hide the mark of slavery.
The Sun pirates continued their voyage, sinking many marine ships in pursuit into the depth of ocean...
That's if for this week.
Even the most violent one, Arlong, had to stop Jinbe. That's how much Jinbe is enraged
Arlong: Hey hey, bro, that's enough!! He's already lost conciousness!!
JInbe: So enslaving one is legal, but freeing the slaves is a sin...!? Queen Otohime, do you still tell us to love humans after seeing this!?
Otohime is strong, but her body is weak. Slapping someone makes her bones break. 
______________________________
The Pirates of Sun are cool! 
Otohime is surprisingly unattractive looking lol. She's not terrible, but it's unexpected.

She's mermaid but her tails are split. Her outfit looks like Otohime from folklore.
Shirahoshi was just born, the three princes are all already born
Jinbe is 30 years old
Arlong makes a living off attacking human pirates, so he demands the army to give him money[/spoil]