I Teach Ace Armament Haki, and Akainu Loses It

After transmigrating to the world of One Piece, Luo Chen awakens the [Strongest Mentor System] from the start!

Simply teach others, and he gets a hundredfold critical-return bonus!

[Ding! “Chosen One” Portgas D. Ace detected. Potential: S+. Armament Haki potential: F-. Personality flaw: “reckless.” Would you like to launch a personalized training plan?]

“Do you even have to ask? Train him until he drops!”

And so, the Whitebeard Pirates underwent a complete change in style.

Luo Chen: “Ace, your Flame-Flame Fruit can’t even light a piece of paper. You’re spreading your power too thin! Here, I designed this for you: ‘Flame Compression and Armament Haki Envelopment Techniques’!”

[Ding! You taught Ace Armament Haki. Experience points ×100! Congratulations, Host, your Armament Haki has reached the highest level!]

Luo Chen: “Marco, your phoenix’s regenerative power is impressive, but your attack power is a joke! Here, take a look at this ‘Flames of Regeneration: Explosive Form Development Manual’!”

[Ding! You helped Marco develop his Devil Fruit ability. Reward: permanent physique +500! Special aura unlocked: “Through the Flames”!]

The Summit War breaks out.

Seeing Ace, wrapped in black, molten Haki, punch Akainu straight down to the bottom of the sea,

Fleet Admiral Sengoku is utterly dumbfounded. “W-what the hell, is that still Ace?! Since when did the Whitebeard Pirates open an advanced training school?!”