Volume 86

Volume 86 is titled "Yonko Assassination Plan".

Cover and Volume Illustration
The outside cover is red, the title logo is alternating baby blue and white, and the author's name is written in purple. In the center of the cover are Bege, Luffy, and Caesar Clown (in his Gastino disguise) with their heads squished against each other; in front of them at the bottom are Sanji and Pudding in their wedding apparel looking at each other. In the background are Bege's family and crew; from right to left are Charlotte Chiffon, Capone Pez, Gotty, and Vito. Bege, Gotty, and Vito are holding their KX Launchers. Behind them is a giant wedding cake.

Chapters

 * 859. Yonko Assassination Plan (四皇暗殺作戦): Bege reveals how they will execute their plan to assassinate Big Mom, and the day of the wedding soon arrives.
 * 860. 10:00 Opening of the Banquet (10:00 開宴): The tea party finally begins.
 * 861. Good Actor (演技派): Bege reviews the assassination plan as the wedding is about to start.
 * 862. The Intelligent Ones (頭脳派): The wedding begins, and Sanji renders Pudding unable to shoot him. Luffy then enters the wedding venue.
 * 863. The Honorable (義侠派): Luffy tries to weaken Big Mom by breaking a portrait of Mother Carmel, but Sweet Commander Katakuri stops him. However, Brook comes in and breaks the portrait.
 * 864. The Vinsmoke Family Massacre Plan (ヴィンスモーク家皆殺し計画): Big Mom is left stunned, and her crew goes after the Straw Hat-Fire Tank alliance. Some of them prepare to execute the plan to massacre the Vinsmoke Family.
 * 865. Hey, Mother (ねぇマザー): Big Mom sees the broken Carmel portrait and screams, incapacitating her crew, and Sanji rescues his family. Big Mom begins remembering her past.
 * 866. Natural Born Destroyer (NATURAL BORN DESTROYER): As a child, Big Mom was raised by Mother Carmel in an orphanage on Elbaf. However, she earned the wrath of the giants there after going on a rampage.
 * 867. Happy Birthday (HAPPY BIRTHDAY): After the Elbaf incident, Big Mom's orphanage was relocated to another island. During her birthday party, however, Mother Carmel and the orphans all disappeared.
 * 868. KX Launcher (KXランチャー): Big Mom remembers the start of her pirating career as in the present Bege prepares to assassinate her. However, she nullifies his weapons and her crew regains their composure, causing them to chase the alliance again.
 * 869. Under Siege (籠城): Bege turns into a human fortress but the alliance finds itself besieged. Big Mom then regains her senses and attacks Bege herself.

SBS Notes

 * The cat from Hawkin's crew is named Faust and is confirmed to be a mink.
 * Charlotte Joscarpone and Charlotte Mascarpone, two of Big Mom's children, are named and identified. They are revealed to be members of the Snakeneck Tribe, making them the first named tribe members along with Amande.
 * Some of Zepo and the Nox Pirates history is revealed.
 * Several characters birthdays are revealed. Those characters are Charlotte Pudding, Vinsmoke Reiju, Kin'emon, Nojiko, Bell-mère, Mr.5, Toto, Terracotta, Pekoms, Kaya, Kanjuro, Tamago, Riku Dold III, Blue Gilly, Pedro, and Charlotte Smoothie. The Going Merry is also included.