One Piece: Adopting Akainu at the beginning, adopted son Barrett

It is the year 1480 in the Kaiyuan calendar of the Pirate World.
The sea is now about to experience a riot, and the Battle of God Valley begins.
At this time, the three admirals were still teenagers, the destroyer Barrett was just three years old, and the Seven Warlords of the Sea were all playing in the mud.
Ross Nasdaq, a time traveler with nothing but a devil fruit, decided to…
He adopted Akainu who had just become homeless and became both a mentor and a father to him.
"Sakaski, this is how you deal with your trash!"
Akainu: The conservative Aka-chan is now a thing of the past, and the next to appear is the perfect and intelligent Sakazuki!
Take the autistic child Barrett away, let him feel the warmth of home, arrange a marriage for him, and then let him be your thug for life!
"Barrett, birds, why do they fly?"
Barrett: Fighting is not just...
Looking back at the Battle of Marineford, Ross raised his head and looked at the powerless Whitebeard calmly:
"Watch carefully, learn well, this is how you raise a child!"