One Piece : From Slave to Fleet Admiral Novel

During the Summit War, Koby stands before Admiral Akainu and condemns the Marine's inhumane conduct before the world. Red Hair Shanks intervenes to protect the courageous soldier, but before the Yonko can acknowledge his bravery, a brilliant Holy Light manifests as a spear, killing Koby instantly. Jake, wearing an Admiral's cloak, coldly observes Koby's corpse and orders a complete extermination campaign against the Whitebeard Pirates while simultaneously encircling the Red Hair Pirates. He declares that anyone undermining morale will be executed as a pirate collaborator. Later in Wano Country, Jake confronts Momonosuke, who remains under the Straw Hat crew's protection, demanding his voluntary consent to establish a Marine Base. When refused, Jake strips the Kozuki family of their name the following day. According to Morgans' Quotations of the Marine Fleet Admiral, the completion of a sea railway connecting all islands will signal the true conclusion of the Great Pirate Era.