I Became the Youngest Disciple of the Martial God - Chapter 7

In a world ruled by strength and chaos, a soul from modern Earth awakens in the frail body of a seven-year-old Sakazuki. Orphaned by pirates and left with nothing but a burning hatred, he refuses to remain weak. With knowledge from his past life and the power of the Magma Magma Fruit, he begins his ruthless ascent through the ranks of the Marines.But justice is not so simple. Corruption festers within the very institution meant to uphold order, and the line between protector and tyrant blurs with every battle. Undeterred, Sakazuki will forge his own path—one paved with fire and blood.From a vengeful child to the most feared force in the Marines, witness the rise of a man who will set the seas ablaze and redefine what it means to bring order to a chaotic world.

Ron finds himself reborn in the world of One Piece, stranded on a remote island in the East Blue. But he's not just any ordinary child—he’s bonded to a mysterious sign-in system that grants him powers with every new location he visits.At his first sign-in, he unlocks the legendary Sun Breathing Technique, along with a boost to his vitality. From Shitmotsuki Village to Skypiea, Enies Lobby to Marineford, Ron travels the world, collecting extraordinary rewards that make him a force to be reckoned with. The Raikiri, one of the 21 Great Grade Swords, Armament Haki, Observation Haki, and more fall into his hands.As Ron steps onto the battlefield of Marineford during the legendary Summit War, the mightiest warriors—Four Emperors and Marine Admirals alike—pause, stunned by his presence. But Ron merely waves them off, “Don’t mind me. I’m just passing through.”Join Ron on his journey across the Grand Line as he signs in at iconic locations, growing stronger with every step. This is not just an adventure—it’s a legend in the making.

I’m an imperial uncle; his imperial majesty’s uncle.

Once, someone with nothing better to do took a comprehensive survey of the current dynasty, and summed up the imperial court’s three great cancers.

Wang Qin leads in corruption; the treasury is never full.

Yun Tang favours a few, forming cabals; leading to corruption in our politics.

Prince Huai plays with power, and serves as the head of a hundred poisons — thus causing instability to the throne.

When they talk about the most venomous of vipers, the wicked one who plays with power, the biggest cancer of them all, they’re talking about me: this insignificant prince, Prince Huai, Chengjun.

I can only say that I feel rather hapless in the face of these theories.

In truth, I have been ever dutiful, ever devoted, devoid of intention to monopolise power, and possess even less of a heart to covet the throne. In the entire imperial court, I dare say there is no loyal subject more loyal than I.

But, most tragically, in all the realm, the matter of my being a loyal subject is something that not many would believe.

- Description from Novelupdates

What should I do after passing through?

Mo Jun’s answer is:

Life will be meaningless if you don’t work hard to enjoy it.

Then play music, then dance.

(Note: This book is a colleague of Qin Shimingyue, classified as light novels, not historical texts.)

- Description from novelbuddy