One Piece 1000 Story Memorial

One Piece 1000 Story Memorial is a one-shot created as a tribute to Chapter 1000 and the One Piece manga overall by the mangaka who were Oda's contemporaries in Shonen Jump at the time of the chapter's release. It was released in the same Shonen Jump issue that Chapter 1000 came out with.

Format
Each mangaka wrote and drew 1-2 pages in the one-shot, which each show self-contained events featuring characters from the mangaka's work as well as One Piece characters on occasion. Below is the sequence of authors as well as the series they normally produce.
 * Kōhei Horikoshi (My Hero Academia)
 * Yūki Tabata (Black Clover)
 * Riichiro Inagaki & Boichi (Dr. Stone)
 * Gege Akutami (Jujutsu Kaisen)
 * Hitsuji Gondaira (Mission: Yozakura Family)
 * Atsushi Nakamura (Agravity Boys)
 * Yoshifumi Tozuka (Undead Unluck)
 * Hajime Komoto (Mashle: Magic And Muscles)
 * Kentaro Yabuki (Ayakashi Triangle)
 * 1) Tomohiro Hasegawa (Moriking)
 * Kei Kamiki (Magu-chan: God of Destruction)
 * 1) Shuhei Miyazaki (Me & Roboco)
 * Ryūhei Tamura (Hardboiled Cop and Dolphin)
 * Togo Goto & Kento Matsuura (Phantom Seer)
 * 1) Ryo Nakama (High School Family)
 * Mitsutoshi Shimabukuro (Build King)
 * Kazu Kakazu (Our Blood Oath)
 * Yuuto Suzuki (Sakamoto Days)

Plot Summary

 * My Hero Academia: Members of Class A appear dressed as the Straw Hats, and want to riot as the "Class A Pirate Crew" with Izuku Midoriya, who is dressed as Gol D. Roger. However, Midoriya says they should help other people instead, and Class A then surrenders and is led away by Hannyabal.
 * Mission: Yozakura Family: Taiyo Asano is captured and is sentenced to be hung by Kyoichiro Yozakura for being a pirate, despite him saying he's a normal sailor. The jury is the rest of the Yozakura siblings wearing clothes representing various One Piece characters. Taiyo objects saying its illegal to have pirates as a part of the jury but Kyoichiro says that they are a part of the Six Warlords of the Sea, and since they're legal pirates its okay for them to be the jury.
 * Build King: Tonkachi, Renga, and variety of Build King, Toriko, and Seikimatsu Leader den Takeshi! characters, as well as caricatures of Eiichiro Oda and Mitsutoshi Shimabukuro themselves, standing around Luffy and shouting congratulations for the series' milestone.
 * Ayakashi Triangle: Matsuri Kazamaki leads a pirate crew made up of ayakashi like Shirogane and Ponosuke.