Chapter 312

Before the Door of Hell (地獄の扉のその前で) is the 312th Page of Yūki Tabata's Black Clover.

Summary
The Black Bulls bicker over the destruction The Raging Black Bull has caused to the Spade Kingdom's castle. Lotus Whomalt and Dorothy Unsworth are happy for their assistance. Moris Libardirt, who heard from Dante Zogratis about the squad's Arcane Stage mages, gleefully wishes to dissect them and then generates from his fingertips tendrils with clawed hands. Although Vanessa Enoteca and Gauche Adlai recognize that Moris's magic is similar to the Dark Triad's, they do not know who Moris is. Moris's tendrils begin disassembling the base in spite of Rouge's protection because his Modification Magic can affect intangible concepts. As the tendrils get near the Magic Knights, Grey remembers her conversation with Owen who described her magic as Transmutation Magic, and then converts a tendril into plants. Moris is impressed and sends more tendrils after Grey. She panics over not being able to transform herself while blocking the tendril, but Gauche tells her to focus and to look at him. He then creates multiple mirror copies of her, and they manage to convert all of the tendrils into plants.

Amused, Moris then uses Presence of the Demon King to slam the base down since Grey's magic will not affect gravity. Henry Legolant remembers how Gravity Magic broke apart the base before, and Gordon Agrippa, who spent six months training to transform his poison into medicine, steps next to Henry and uses Curse-Worker's Neighbor to modify Henry's curse, allowing Henry to choose whom to drain of magic power. Henry drains Moris's magic power and pours into the base, which turns a darker color and gains a flame-like aura. Henry then has the base punch Moris, who is confused how he could lose after attaining supreme power.

The rest of the Black Bulls then rush into the chamber and assemble in front of the base. While Moris vents about his efforts and experiments in gaining power, Asta hits Moris's cheek with the Demon-Dweller Sword, knocking him back into the wall. Asta dismisses Moris's roles as a devil host and a Mage Scholar from the Diamond Kingdom and demands the return of their captain, Yami Sukehiro.