Nen: the hidden source of energy and potential that runs through everyone, and gives those that master it a source of great power. Inside Nen is the potential for limitless light and limitless darkness. The Hunter Association has arisen to control access to it. Hunters come in many shapes and forms, and with many different appetites - but all of them have learned to master Nen, and use it to chase wealth, power, and their dreams. The greatest and most powerful Hunter is Isaac Netero, chairman of the Hunter Association. Decades ago he sealed away Jed, a Hunter who had mastered the use of On, the dark "shadow" of Nen. Now On users have reappeared at the Heaven's Arena "Battle Olympia" tournament. For Netero, this is the last mission: to protect the Association and the world from a threat driven by hatred and the thirst for revenge. And he's going to need all the help he can get in order to succeed.

Dorohedoro: Ma no Omake further explores the world of sorcerers and the Hole, honing in on what the characters do in their spare time when they are not seeking out their enemies. Kamen Kakusa Fujita attends a mask conjuring ritual in hopes of a Devil bestowing him with an appropriate mask, like the ones his colleagues Noi and Shin possess. Hopefully his offering entices the mask-maker! Tenpo For You Nikaidou, lacking money and forced to sell gyoza on the streets of the Hole, stumbles upon a quaint shop selling tea and sweets. Its owner is the gentle and hospitable Syueron, but it seems the denizens of the Hole bear a grudge against him. Shitappa Seishun Graffiti Intrigued by the photographs hanging around the mansion, Ebisu approaches En hoping for a portrait of her own. However, she is disappointed to find that only members of the En Family can have their pictures taken. Anata no Shiranai Gyoza no Kai The Gyoza Fairy keeps the Hungry Bug in pristine condition, but his primary responsibility is ensuring the gyoza tastes good. So he becomes rather agitated when Nikaidou's customers do not properly enjoy their meals. Odoru Ma no Utage En is enthusiastic about his masquerade ball and is adamant on his family's participation. Per tradition, attendees must choose a partner and dance to appease the Devils. To their horror, they discover that failing to do so may incur nasty consequences! Yokaze ni Fukarete Ooba Kinenbi Nikaidou gives detailed instructions on preparing oba gyoza and Kaiman is eager to help! [Written by MAL Rewrite]

The Holy Grail is a powerful, ancient relic capable of granting any wish the beholder desires. In order to obtain this power, various magi known as "masters" summon legendary Heroic Spirits called "servants" to fight for them in a destructive battle royale—the Holy Grail War. Only the last master-servant pair standing may claim the Grail for themselves. Yet, the third war ended inconclusively, as the Grail mysteriously disappeared following the conflict. Many years later, the magi clan Yggdmillennia announces its possession of the Holy Grail, and intends to leave the Mage's Association. In response, the Association sends 50 elite magi to retrieve the Grail; however, all but one are killed by an unknown servant. The lone survivor is used as a messenger to convey Yggdmillennia's declaration of war on the Association. As there are only two parties involved in the conflict, the Holy Grail War takes on an unusual form. Yggdmillennia and the Mage's Association will each deploy seven master-servant pairs, and the side that loses all its combatants first will forfeit the artifact. As the 14 masters summon their servants and assemble on the battlefield, the magical world shivers in anticipation with the rise of the Great Holy Grail War. [Written by MAL Rewrite]

As the Fourth Holy Grail War rages on with no clear victor in sight, the remaining Servants and their Masters are called upon by Church supervisor Risei Kotomine, in order to band together and confront an impending threat that could unravel the Grail War and bring about the destruction of Fuyuki City. The uneasy truce soon collapses as Masters demonstrate that they will do anything in their power, no matter how despicable, to win. Seeds of doubt are sown between Kiritsugu Emiya and Saber, his Servant, as their conflicting ideologies on heroism and chivalry clash. Meanwhile, an ominous bond forms between Kirei Kotomine, who still seeks to find his purpose in life, and one of the remaining Servants. As the countdown to the end of the war reaches zero, the cost of winning begins to blur the line between victory and defeat. [Written by MAL Rewrite]