One Piece: The Ancestral Legacy's Hegemony

1. Transmigration and Homecoming: Lin Ao awakens on a mysterious island, merges his memories, and learns who he is. With an unmatched presence, he returns to Foosha Village in the Goa Kingdom and reunites with his son Garp, now in his prime and as lively as ever.

2. Family Teachings and Foundations: Lin Ao does not directly interfere with Garp's path to the Marines. Instead, under the name of “family-inherited secret arts,” he systematically teaches him an improved form of traditional martial arts for body training and an ancient qi-refining method for gathering qi. This lays the theoretical groundwork for “Flowing Sakura” and the internal destruction of Armament Haki. As a result, Garp's foundations in martial arts and Haki far surpass those of the original timeline.

3. Laying Plans in the East Blue: Lin Ao travels across the East Blue, secretly winning over or advising early powers, such as a predecessor of the Krieg Pirates and Arlong's superior, and establishes a covert intelligence and supply network called the Hidden Current.

4. A First Display of Power: The Rocks Pirates extend their influence into the East Blue. To protect his family and territory, Lin Ao makes his first move, effortlessly defeating a senior officer under Rocks with nothing but martial arts and basic Haki. The feat sends shock waves through Marine high command and the World Government.

5. Volume Finale: With the invincible foundation laid by his father, Garp makes a name for himself in the Marines ahead of schedule and earns the title “Iron Fist.” Watching the sea from behind the scenes, Lin Ao murmurs, “The tides of this era will be guided by my Monkey Family.”