Humans and Elves vs. Zagred

Asta, Yuno, Patolli, Licht, Lumiere, and Secre vs. the Devil is a fight that occurs in the top room of the Shadow Palace.

Pre-fight
Asta, Yuno, and Patolli arrives at the top floor, which the Devil comments about how Patolli's transformation has come undone while thinking that Asta's Anti-magic will be troublesome. Suddenly Lumiere and Secre burst into the room, which the Devil says that he is surprised to see Lumiere again. Yuno informs Asta who Lumiere is, while Secre informs Lumiere who Asta and Yuno are. Lumiere and Secre notices Licht and head over to examine him. After examining him, Secre uses her magic to unseal Licht's soul. Once Licht's soul is unsealed, Licht thanks Lumiere for what he had done back then.

Lumiere, Licht, and Secre head over to were Asta, Yuno, and Patolli are at. Licht talks with Patolli about what Patolli had done, and hugs Patolli while commenting about how even through Patolli mistaking, he did help out their people.

Fight
Licht and Lumiere then turn to the Devil, and comments about how they will finally settle things from 500 years ago. As the Devil has his creature attack them, Lumiere and Licht each use spell to destroy the creature. While the Devil analyze what the two had done, Licht gets beside the Devil and fires a spell. The Devil dodges the spell, but Licht manages to absorb the spell and fires the spell at the Devil. The Devil dodges again and thinks about how Licht and Lumiere are to fast for him to counter with his Kotodama Magic. Lumiere manages to land a blow on the Devil, but the Devil counters by conjuring a trident and ripping off Lumiere's arm.

As the Devil comments about how nothing can kill him since he has a body and grimoire, but Asta shows up and attacks the Devil. The Devil thinks about how Asta's sword was able to counter his trident's ability to disintegrate anything that it touches. The Devil uses his Magic to force Asta away, and has it rain sword at him. As Asta starts to counter the swords, Lumiere, Licht, Yuno and Patolli show up and help him. Secre then help Lumiere, by using a spell to reattach his arm. Asta is amazed by what Secre did and comments about how he feels that he knows her, but Secre tells him to focus the battle. As the Devil comments about how worthless all magic is against him, Secre tells the Devil that he will be take down by the people that he sees as worthless.

The Devil says that they should speed things up, but comments about how the only exit is on this floor and that the ones on the lower floor will be consumed by his creature before they finish him. Licht tells the Devil that all their power will finish the Devil off, which Licht uses his sword to absorb all of the power of the elves. After absorbing all of the elves power, Licht unleashes a spell that obliterates the Devil's body. As the others are amazed by what Licht had done, but notices that the Devil's heart is still intact. The Devil then uses his magic to restore his body. Asta thinks about how powerful Licht's sword is, and wonders what his sword is capable of doing. Asta decides to unleash his power and releases his Anti-magic. Lumiere notices Asta's sword, which Secre informs Lumiere that Licht's grimoire has become a five-lead grimoire and that another Devil might dwell within Asta's sword.

Asta loses control of his power and flies towards the Devil. The Devil tries to attack Asta with his trident, but Asta easily cuts right through it. The Devil then has his creature attack Asta, but Lumiere comes to his rescue. Suddenly Asta sends Lumiere flying into the wall. Yuno and Patolli attack the Devil's creature, which Patolli thinks about how their magic is useless against the creature. Patolli thinks about how his other magic should be able to work, and magic to use a spell to harm the creature. The Devil comments about how even that magic is useless against him, while Asta tries to get his magic under control. Secre checks up on Lumiere, which Lumiere says that he is fine and is amazed by Asta's Anti-magic. Secre says that she should unseal Asta's power, which Lumiere tells her not to since he is sure that it will be fine. Yuno uses the remnant magic in the air to create a sword that is capable of harming the Devil's creature, while asking Asta how long he plans to lag behind. Asta replies that he has just figured it out, and uses his Anti-magic to up grade his sword. As Lumiere thinks about what Yuno had done but wonders who Asta is, which Secre tells Lumiere that Asta is someone that has worked harder then anyone else in the kingdom while not giving up.

The Devil has his creature attack, which Asta and Yuno easily counters the attack. Yuno uses his magic to push Asta towards the Devil, which Asta manages to pierce the Devil with his sword. Suddenly multiple mouths appear all over the Devil's body, and uses them to force Asta away and have his creature multiple faster. While Patolli defends against the creature, Lumiere and Licht tells Patolli that they are leaving this area in his care while they help the others on the lower floor. As the Devil says that its now over, Asta and Yuno tells the Devil that its not finished until they take care of the Devil. Secre thinks about how she originally wanted to use Asta but changed her mind after seeing all the hard work he had put in, and tells Asta to win.

The Devil has his creature attack Asta and Yuno, which the two easily counters the attack. Asta and Yuno head towards the Devil, but Asta suddenly feels a pain and notices that he is reach his limit. Licht and Lumiere then uses a spell to protect the elves along with those around them, from the Devil's creature. As the Devil's creature goes to attack Lumiere, Licht, and Secre, Patolli protects them with a spell. As the creature goes to attack Asta, Yuno comes to his rescue. The Devil sees this and tells them that this is were they will meet their end, and has his creature attack again. On a lower floor, Yami decide to attacks the Devil with a spell which Charla decides to help him. Asta, Yuno, and Yami thinks about how they will settle this with one blow.

Secre is watching the two and thinks about how she had thought that Asta won't never be able to be like Lumiere. As the creature attacks, easily counters it. Yuno notices Asta and wonder if he is already at his limit. Yuno tells Asta that he will leave him behind if he can't keep up and head towards the Devil, which Asta quickly chances after him. The Devil sees this and thinks about how Yuno can't cut through his heart, while Asta will won't be able to cut through his heart. The Devil notices that Asta had gotten behind him, and thinks about how Asta used the remnants of the shredded magic in order to get behind him. Asta and Yuno manages to reach the Devil and cut into him. Suddenly Asta's Black Form comes undone, which Asta thinks about how he is has reach his limit. The Devil forces Yuno away, then starts to taunt Asta. Yami then launches his spell and manages to cut the Devil in half. While the others are shocked by this, the Devil is confused about how this can happen. Secre uses this chance to heal Asta's wounds with a spell and thinks that Asta should be able to summon his Anti-magic. As the Devil goes to attack, Yuno shows up and stops him. Asta then uses a spell to cut the Devil in two.

Post-fight
The Devil says that its impossible for this to happen to him, when the Devil in Asta suddenly appears before the Devil. The Devil in Asta greets the Devil as his elder, which the Devil wonders who he is. The Devil in Asta tells his elder that he doesn't need to know that, and that it doesn't matter how strong the Devil was since he will now disappear since he had lost. The Devil in Asta then bids the Devil farewell, which the Devil disappears. Licht, Lumiere, Patolli, and Secre are shocked that the Devil is finally dead, which Patolli remembers the past. Secre also remember the past, and thanks both Asta and Yuno for defeating the Devil.