Two days after the battle with the elves and the devil named Zagred, Asta was put on trial for the false charges of being a devil and the mastermind behind the incident, that the nobles and royals put him in order to pin the blame on him for their incompetence. Asta had insisted that he wasn't a devil nor the culprit, however the nobles and royals refused to listen to him because he is a "lowly commoner". Then, the judge Damnatio brought in Marie, Gauche's little sister, who had been handcuffed. "If you do not take responsibility for the incident you caused, we will be forced to execute everyone involved in the attack, starting with the girl," Damnatio said to a horrified Asta. He looked toward Marie and saw that mages were preparing attack spells in order to kill the little girl. Asta's thoughts raced through his mind faster than ever before. He knew that nobody was coming to save him and Marie, and there was no way to convince the nobles that they were innocent, Asta was filled with anger and resentment toward those corrupt, pathetic excuses for humans, he did not want to even look at them any longer, so he said to Damnatio,"Alright then, I see that I am no longer welcome here." Damnatio replied, "So you accept responsibility for your actions?" "I'm not accepting responsibility for what didn't do, but if you want me gone, then I'll leave this Kingdom for good." The nobles and royals who heard this were muttering to themselves whether they should believe he would really leave the country. After thinking about what Asta said himself, Damnatio asked,"You would really subject yourself to being exiled of your own free will?" Asta replied, "Yes, as I said, I'm clearly not welcome here anymore." Damnatio saw the look in asta's eyes and could tell he was sincere, he then announced to everyone in the courtroom, "For the crime of treason against the clover kingdom, Asta, you're hereby stripped of your status as magic knight, and exiled from Clover kingdom. Leave this country at once." Asta broke free from his restraints and proceed to walk out the door and leave the clover kingdom. Just as he was about to walk out, Marie cried out to Asta begging him not to go, but asta ignored her and kept walking. When he got outside, asta activated his black form, which he had gained better control of after the fight with Zagred, and flew straight for the strong magic region at the border of the clover kingdom.
(Asta's p.o.v.)
"I've have finally arrived at the strong magic region, here I never have to look at any of those revolting aristocrats, not my traitorous squad mates. Now the first thing I need to do right now is look for shelter and food." I thought to myself when I first landed. I looked around saw many trees, mountains, and a wide river just east of me. I decided to search for shelter somewhere near the river, I looked around and found a rather large cave about half a mile from the west side of the river. "I found my shelter and with a river not that far from it, I not only have a source of water, but also an abundant food source with all the fish swimming down stream." I thought as I then decided to gather fire wood to keep myself from freezing to death at night.
Night came quickly, I had already caught some fish by the river, and was just got done cooking them, I took one and started eating, it was pretty tasty. As I was eating, I thought about what the wizard king said to me the day before the trial, "Asta, that black power of yours originates from a devil." I thought that if that's the case then is it possible to communicate with the devil. I decided to go ahead and try, so I closed my eyes and called out in my mind, "Hey, you can hear me, right? Devil?" After I said that, I opened my eyes to see I was in a completely red void, with black flames surrounding me, then I felt like I wasn't alone, I turned around and saw a huge silhouette of a devil. I looked at this being when suddenly, it spoke to me, "You called?" That was when I knew that this was the source of my anti-magic, the devil in my grimoire. I answered the devil, "I did, I wanted to see if the wizard king right about there being a devil in my grimoire, and it turns out he was right." The devil looked a bit baffled as he said, "Is that really the only reason you decided to talk to me?" "No, the main reason was to get to know you. After all, now I'm all alone with nobody to talk to. You're probably pretty bored yourself." I said to the devil. He replied, "Kekeke I once knew human who did something like before, though sadly, they're gone now." The devil sounded sad as he spoke the last part. I asked, "Who?" "Licita, your mother." He said so bluntly. I was shocked when he said that he knew my mom, I had to know more. I said to him, "Who are you?" He replied, "My name is Liebe, I'm your adopted older brother." "He's my brother, how did that happen?!" I shouted out in my head. "I know what your thinking right now, but first let me out of the grimoire, so I can explain it face to face." He said that but I don't know how to do it. "How?" I asked. He told me to take hold of my grimoire and utter the word, "summon", and all of a sudden a black mass comes out of the book, and settles itself next to me on the left as it took form. The black mass took the form of a young devil(about my height) with messy white hair. I asked, " Is that what you really look like, Liebe?" He nodded as he sat down and grabbed one of the fish I had cook by the fire. I looked at and exclaimed, "Seriously, that's why you wanted me to let you out?!" Liebe replied, "I've been in that book for 13 years, I'm hungry as hell!" He continued, "Aside from that, I would rather talk about mom with you face to face." I nodded, understanding that this was very important. I leaned in ready to hear what he had to say.

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The Devils of Jujutsu
FanfictionAsta was exiled from Clover kingdom, for being falsely accused of being a devil. No one came to defend his case in court, he became very resentful of Clover. As he wondered outside the borders, he began befriending the devil in his grimoire, and lat...