Traveling through the world of pirates, Flint Ash was raised by Gol D. Roger.
After Roger died, he was imprisoned in Impel Down due to this identity.
Good news: As a senior sea fan, he knew that Golden Lion Shiji would definitely escape from prison.
Bad news: He only knew the result, not the specific date, let alone whether he would survive until that day.
In order to survive, Ash was forced to swallow a devil fruit with unknown power, explore the power of "reverberation" bit by bit in the hellish prison, and finally escaped through the chaos caused by the Golden Lion's escape from prison.
But freedom is just the beginning.
He knew that Whitebeard would die in the future, he knew the true value of the Nika Fruit, and he also knew that young Marshall D. Teach would kill his companions, capture Ace, take the Shock Fruit, and become the new Yonko in the future.
But Ash also knows something that others don't know - Teach is the only person in the world who has successfully possessed two devil fruit abilities.
So, he took the initiative to board Whitebeard's ship and walked towards the young Teach who had not betrayed anyone.
