Traveling through the Clover Kingdom, Bluerush is in search of the protagonist of this world. All he knows is that the person is an orphan raised under the care of a church in Hage. Eventually, he found the person known as Asta. He was part of the Black Bull squad of the Magic Knights. However, he soon learn that Asta completely lacked any magic at all. So Blue questions how Asta can be a Magic Knight if he can't use magic. Not wanting to confuse himself even more, Rush asks Asta to train him, which he agrees to do. For three months, Bluerush has been using anti-magic, summoning swords using a grimoire, and intense physical exercise. When he was ready to leave Bluerush, he asked his mentor why he joined the Magic Knight. He claimed he wanted to become the Wizard King, to prove that anyone can achieve their dreams regardless of their birth, thereby ending the discrimination against those without magic. After hearing that Bluerush respects Asta a lot.

Asta is owned by Yūki Tabata

Moves Learn
Demon-Slayer Sword: Taught by Asta, Bluerush's weapon transformed into a sword as he ran forward while holding a sword with both hands. When he gets close enough, he slashes the opponent from right to left, knocking them away using Anti Magic.

Demon-Dweller Sword: Taught by Asta, Bluerush's weapon transformed into a sword, which can release projected slashes, allowing him to cut through spells from a distance. The sword can also borrow the magic from the people around him, allowing him to release slashes that possess the properties of other magic attributes.

Demon-Destroyer Sword: Taught by Asta, Bluerush's weapon transformed into a sword, allowing it to generate certain magic tendrils that can absorb and remove the aftereffects of spells. It can even negate Reincarnation Magic.

Art made by Daywalkerrl