I'll Inherit Ace's Will

Invincible protagonist + transmigration + System + no female lead

A post-2000s kid and die-hard One Piece fan somehow transmigrates into the world of One Piece one day, only to become Luffy's son!

From the start, Lu Di inherits Ace's will and, with a System in hand, sets out to grow stronger as he travels through different worlds.

Naruto: "The Nine-Tails is better off with him than with me."

Sun Wukong: "You're a worthy opponent."

Invincible Lu Di takes his crew around the world every day in search of stronger opponents, all so he can defeat his powerful father!

I, Lu Di, am going to surpass the Pirate King!