Chapter 8 (Quartet Knights)

Collapse (崩壊) is the 8th chapter of Tashiro Yumiya's Black Clover Side-Story: Quartet Knights.

Summary
As Karna Freese and Yami Sukehiro call out to each other, Asta notices that Karna's hair color has changed and wonders why. Karna begs Yami to kill her. She explains that Yami needs to kill her before her father completely takes control of her body because she doesn't have the power to stop her father. However, her father manages to take back control and Karna's appearance reverts to what it was earlier in the dungeon encounter.

Freese tells Licht that there has been enough playing, and that preparations need to be made for the Night of the Crimson Moon. Asta wonders what that is, but Sylph interrupts. To Yuno's annoyance, Sylph complains about them getting distracted and that she hasn't gotten the chance to use her power. She goes on to say that her power would easily crush the enemy, then tells Yuno that they should defeat the enemy and go on a date, but Yuno rejects her.

Vetto and Fana leap to attack them, but everyone is interrupted by the ground erupting and collapsing. The dungeon is about to completely collapse. Despite this, Sylph wants to continue the fight. Licht says that they had enough fun, and that they'll be retreating for now. Yami demands that they give Karna back, but Licht tells them to not get the wrong idea because their lives are in the palm of their hands. Licht aims a Heaven-Splitting Flash at the roof of the dungeon, which surprises Asta, Yuno, and Yami. Licht tells them that should meet again - if they are still alive after this.