Arkham Asylum?!

Ben's birthday finally arrived, but not with happy gifts or cake, mostly because he hadn't left his apartment after returning to Earth.

All he did was keep working on the Ultimatrix while not switching from Graymatter form, leading to a progress of 20-25%.

The Ultimatrix started to take form as he designed it, just like in the show, so it would be easier to connect it to the Omnitrix.

Of course, he knew that the lack of communication with others wasn't something good, but he just couldn't abandon the Ultimatrix.

But his birthday didn't just make him a year older; it also brought another surprise.

While Ben was occupied with the Ultimatrix, he began to hear a sound as his Omnitrix turned red, transforming him back into his human form, which surprised him. It shouldn't have a timer anymore because he already activated the Master Control.

"Is it perhaps because the Omnitrix activated the fail-safe?"

But he didn't have enough time to examine the situation he was put in as his apartment windows shattered.

On the floor, some of the Justice League members entered his apartment – Batman, Superman, Wonder Woman, Flash, and Cyborg were all present.

"Ben Tennyson, you're under arrest for attacking both Gotham and Metropolis and many more crimes committed by yourself," Batman said in a cold voice, enumerating the crimes Ben committed.

When he finally finished, Wonder Woman started speaking, this time with some disgust on her face.

"You better come with us without trouble, or we will have to deal with you the hard way."

They all tensed when she uttered those words because they knew all those aliens were Ben's doing, and he could easily use them again to escape.

But what bothered Ben was that he couldn't scan Flash, who was in front of him right now.

He knew that right now he couldn't escape, and they probably had handcuffs to cover the Omnitrix, so he chose to surrender, with a condition, of course. He couldn't just lose the materials he got, as he wasn't sure how long it would be until he got access to the Master Control again.

"I will surrender, but with one condition: don't touch my things."

"YOU—!" Wonder Woman's anger escalated when she heard his words. After destroying so many lives, he wants conditions?

But Superman interrupted her, as he too was curious about this kid and wanted to discover more.

"Sure."

With those words, Batman cuffed him with some special cuffs that didn't let him move his hands and were quite heavy.

Ben couldn't move his hands at all in them, making his hands hurt because the cuffs were too heavy, so he was left dragging his arms.

The Flash got Ben and started running towards a direction with high speed, making Ben's vision blurry.

When Ben finally opened his eyes again, he was in the Justice League hideout.

"Your trial will start soon when all the members arrive here, so you better rest, kid," said The Flash as he dropped him on a chair, not leaving him alone and constantly watching his every action.

{…}

Ben was now standing in the middle of the room as a table surrounded him in a U shape.

When he looked in front, right, and left, there weren't that many people from the Justice League, probably out on missions. But the one that wasn't in his apartment and was now looking at him was Aquaman.

"Ben Tennyson, for all the crimes you have committed, you'll have to pay for them."

Batman was again the one who talked first and was in front of him.

"So all the money you accumulated from committing will be used for the repair of Metropolis."

Not like Ben could care about that money now, as he already had the best material he found from space, so money was useless to him anyway.

"And you will either go to Arkham Asylum or join the Young Justice under our watch."

"What?!" Some were shocked, some curious, while some anticipated these words from Batman. While Ben was confused and found this situation quite funny.

"Why would you let this kid join Young Justice, Batman?"

"From the time he escaped Blackgate prison, he didn't commit any serious crime besides running from the Young Justice."

"And in Metropolis, he didn't commit any crime besides that one, and even after that one, he didn't show up again."

Superman completed Batman's statement, which made again a lot of confusion from the other members.

When both of them finally cleared all of the other members' questions, even though some didn't like it, they all looked towards Ben.

"So what will you choose, Ben Tennyson? Live your whole life in Arkham Asylum or join the Young Justice."

"I choose the first choice."

All of the Justice League gasped when they heard his answer. Who would have chosen a prison full of psychopaths over joining the Young Justice?

"Are you sure? The Arkham Asylum isn't just a joke. It's a prison that has all the worst psychopaths from this world. And you don't look like one that can withstand that, kid."

Superman asked in a concerned voice, as he knew if this kid goes to jail, he couldn't ask him about the Kryptonian he met.

"Yeah, I am good in Arkham Asylum."

Hearing him say the same choice twice, Batman intervened this time.

"If you choose to go to Arkham Asylum, then we will need to investigate all of your belongings, which will result in us failing to back up that condition you put."

Batman couldn't play nice with this kid anymore. If he wants to go to Arkham Asylum, he would probably become a new acolyte of the Joker.

So he wants to hit him where he's soft, and that spot is his unknown materials and the alien device he was working on.

"I don't think that threat will work on me. Mostly because if you guys choose to play with the thing I was working on, it will go boom and destroy this planet."

Hearing what Ben just stated tensed all because Superman had informed all of them that the materials this guy uses are known just by Kryptonians.

Of course, not all the materials were known to Superman. Mostly, he didn't have any information on them because that wasn't his field of work.

But some he recognized because they were used in creating the ship he was sent to Earth with.