Chapter 30 (Quartet Knights)

Death Blow (必殺の一撃) is the 30th chapter of Tashiro Yumiya's Black Clover Side-Story: Quartet Knights.

Summary
Freese proclaims that he will be able to kill them all with the next hit, which Asta replies that they are going to make Freese eat their next big attack. Asta asks for Yuno to lend him a hand, which Yuno agrees. Yuno extends his hands, which Asta tells him to not actually extends his hand. Yami wonders what the two are doing in such a situation. Asta explains how he has used his Bull Thrust attack with Vanessa and Finral's help, but now he need Yuno's Wind Magic to produce a more powerful Bull Thrust. Asta says that their would be no way to avoid the attack, which Yuno comments about how it is two troublesome but agrees to lend Asta a hand. As Yuno surrounds Asta with his Wind Magic, Yuno tells Asta to not be careless and that he will put more power into it. As Asta is thrusted forward, he comments about how he is careful.

Freese manages to dodge the attack, and thinks about how Asta is attacking with his two sword while being thrusted forward by Yuno's wind. Yami sees this and thinks about how this technique is both offensive and defensive. Sylph complains to Yuno about not using her power some more and working along side Asta.

Freese attacks with his Crescent Cut spell, but Yuno uses his magic to have Asta dodge the spell. Asta attacks again, but Freese dodges and thinks about how Yuno has such precise mana control since he was able to change the trajectory of the attack so easily. Asta thinks about how fast he is going and that the power will be lost if he lower his guard for just a second. Yuno thinks about how this technique is consuming more power then he thought, and that it will be dangerous if this doesn't end soon. Yuno and Asta think about how this is an attack that is with their rival, and that they are definitely going to go through with it.

Freese sees their determination and attacks Yuno, which Yuno counters by using Sylph's Breath spell. Freese thinks about how their attack with stop if he lands an attack on Yuno, and wonders just how much mana Yuno can draw out while defending against his attacks. Suddenly Yami attacks, but Freese is able to block the attack. Freese wonder why Yami would attack since his attacks don't do anything to him. Freese tells Yami to be gone and forces Yami away. Asta attacks again, but Freese dodges the attack. Suddenly Asta is wounded, which Freese says that they are down since the reach their limit. As Sylph worries about Yuno, while Yuno thinks about how it is not over yet. Freese praises them for trying but it is over. Suddenly Freese stops moving, and notices that Yami is using his Dusk spell on him. Yami comments about how he has come to far to let it end now, which Freese thinks about how this was Yami's plan from the beginning. Yami thinks about how his friends will be able to take care of Freese, with the gap that he was able to create. Asta then takes this chance to land his Bull Thrust on Freese.