Chapter 39 (Quartet Knights)

Invasion (侵入) is the 39th chapter of Tashiro Yumiya's Black Clover Side-Story: Quartet Knights.

Summary
Inside the Clover Castle, King Augustus Kira Clover XIII is informed that all of the citizens have evacuation and that they will be safe for the time being. Augustus comments about how Julius Novachrono did say that they were going to be attacked by the Eye of the Midnight Sun, but did not think that it would get this troublesome. Augustus says that if the Eye of the Midnight Sun does not attack, then Julius would be in trouble. Augustus complains that it is unacceptable that Julius is more loved by the citizens than him, since he is the greatest person in this country, the king. As Augustus comments about the next Star Awards Festival, when he is suddenly shocked by a quake.

It is reported that the Eye of the Midnight Sun has attacked, which multiple brainwashed Magic Knights attack the barrier of the Royal Capital. Asta feels the shaking and wonders if everything is really be alright, which Noelle Silva says that some unfathomable mana are clashing. Julius says that more than a hundred brainwashed Magic Knights are unleashing their mana, but reveals that this place will not get broken into so easily. Julius tells them that there is also a unit for intercepting attacks from the outside, and that each Magic Knight is deployed to a place within the Royal Capital and that they will not forgive anyone who invades the Royal Capital.

Julius says that their enemy is the Eye of the Midnight Sun, and that they can break through the magic barrier any time. Julius also says that they also have an inner unit for protection and that is when it is the Black Bulls' turn. Julius tells them that he is looking forward to seeing their explosive power, since they are going to protect the Royal Capital from the inside. Julius thinks about how their hands are tied at this present situation, and they will just have to wait for the enemy to make a move.

Outside the barrier, Licht compliments Julius for what he has done but its a shame that they have expected this. Suddenly a magic asks to be let in the barrier since they are just playing in the enemies hand. Once inside, the Magic Knight reveals himself to be Rhya and attacks them while thanking them for letting him inside the barrier. A Magic Knight notices that the power of the barrier is decreasing, and states that the barrier will get destroyed soon. Rhya says that that is the point and opening multiple portal around the Royal Capital. Freese appears through one of the portal, which Marx thinks about how someone has penetrated the magic barrier with Spatial Magic. Julius thinks that this is bad and that they are preparing to attack the Royal Capital. Freese is at the clock tower and comments about how they will get this started.