New Holy War arc

The New Holy War arc is the seventeenth arc in the series, lasting from the 257th chapter to the 306th chapter.

Description
Following Arthur's demise at the hands of Cusack, the Sins (minus Ban) who are led by Elizabeth, join forces with the Holy Knights and the Four Archangels to fight against the Demons. In a race to prevent Meliodas from absorbing the Commandments and becoming the new Demon King, the Sins must battle the remnants of the Commandments, including the rogue Estarossa who plans to take the Commandments for himself; while Ban journeys through Purgatory to find Meliodas' emotions and also finds a shocking surprise along the way.

The fight is taken straight to Camelot castle where Meliodas plans to reemerge as the new Demon King, but can the Sins stop him from achieving his goal or will Meliodas be lost to them forever?

Fights and Events

 * Search-and-Destroy Force vs. Demons
 * Monspeet & Derieri vs. Estarossa
 * Sariel & Tarmiel vs. Estarossa
 * Meliodas, Ban & Wild vs. Demon King
 * Gowther, King, Sariel, Tarmiel & Derieri vs. Mael
 * Gowther, King, Diane & Elizabeth vs. Mael
 * Assault Force vs. Zeldris, Chandler & Cusack
 * Seven Deadly Sins & Four Archangels vs. Zeldris & Original Demon
 * Seven Deadly Sins, Four Archangels & Zeldris vs. Demon King

Story Impacts

 * Estarossa kills Monspeet and takes his Commandment.
 * Arbus is revealed to have died fighting lesser demons.
 * Ban reunites with Meliodas in Purgatory.
 * Meliodas' emotions and Ban meet Wild, Hawk's older brother.
 * Hawk is revealed to have originated from Purgatory and was taken by the Demon King shortly after his birth to spy on Meliodas. It is also revealed that all of Meliodas' previous animal companions, (including Wandle), were sent by his father to spy on him.
 * Meliodas and the Demon King are revealed to be unable to remember anything about Estarossa. The Demon King believes Gowther is somehow responsible.
 * It is revealed that Estarossa is actually Mael, having been brainwashed by the demon Gowther into believing he was the son of the Demon King.
 * Mael kills Derieri and takes her Commandment.
 * Mael destroys Sariel's and Tarmiel's physical forms.
 * Oslo dies sacrificing himself to save his friends.
 * King's wings achieve full growth, giving him a big power boost as the true Fairy King.
 * Gowther reveals the reason for that his creator chose to sacrifice Mael was a form of revenge for Mael killing his lover Glariza.
 * After fighting over sixty years against the Demon King, Ban and Meliodas' emotions finally escape from Purgatory thanks to Wild's sacrifice.
 * Cusack and Chandler are revealed to be the two halves of a being called the Original Demon that was separated as punishment for trying to rebel against the Demon King. They re-merge to fight Merlin and Escanor.
 * Elaine loses her wings during a battle against the demons.
 * Ban gives up his immortality to save Elaine.
 * Hendrickson expels Ludociel from Margaret's body.
 * Melascula's Commandment is taken out by force to join the other decrees to be absorbed by Meliodas.
 * Rhitta is severely damaged by the Original Demon.
 * Mael gets his Grace back.
 * The Original Demon is defeated by Mael.
 * Mael and the Seven Deadly Sins battle Zeldris to allow Merlin to freeze the time of Meliodas’s cocoon.
 * Meliodas is reborn as the Demon King after absorbing the Commandments.
 * It is revealed that the Demon King has taken over Meliodas’s body.
 * The Demon King is expelled from Meliodas's body and Meliodas breaks his and Elizabeth's curses, but the price of that is Meliodas will not be able to remain in Britannia much longer.
 * Zeldris goes missing after betraying his father to help the Sins.