Chapter 290

The Highest vs. the Lowest (最上最低) is the 290th Page of Yūki Tabata's Black Clover.

Summary
As the freezing sun is reflected back at them, the fused Lilith and Naamah merges into their magic. Asta notices that he only has two minutes left, and pulls out his Demon-Dweller Sword, which changes shape. He cuts apart the sun with a series of Black Slashes, and then flies in. As he enters, torrents of Demon Fire and Demon Ice Magic surround him, but his Demon-Destroyer Sword dispels the magic in the area near him. The fused devil questions who Asta is. Liebe reflects that he was the weakest devil in the first level of the underworld and stood no chance against the highest-ranking devils. Remembering when Asta thanked him for helping, Liebe thinks that he should be the thankful one for helping him compete against stronger devils. As Asta continues to slice through their attacks, the fused devil is confused that their magic is useless, and although they believe that all life exists to entertain them, they no longer enjoy fighting Asta. They demand to know what Asta is, while wondering what this emotion they are feeling is. Liebe tells them that since they were the strongest in the first level of the underworld, they never knew fear before.

Noticing a change in the mark on Asta's chest, the fused devil remembers when Asta said that he could only maintain Unite for five minutes, so they decide to run away and wait for his transformation to end. Asta chases after them but cannot catch up. The devil laughs and proclaims that they will kill Asta, his companions, and every human in the world. As a chunk of ice falls behind the devil, Nacht Faust emerges from their shadow and restrains them, planning to hold them for only a moment. Nacht notes the irony that the devils with vast amounts of magic are afraid of a human and devil who have no magic at all. Asta swings both his Demon-Dweller and Demon-Destroyer Swords, cutting the devil into pieces. Immediately after, Asta and Liebe's transformation comes undone and they celebrate their victory.

Fights

 * Asta and Liebe vs. Lilith and Naamah