The quotes and words said by the SI reference what he's said in the other stories- You'll get the meaning.

...

She hadn't really thought it through, in truth. The guy had been inside that thing's stomach before he'd... Blown it up? She distinctively remembered the defence measure mentioning doing something of the sort-

She really hoped explosions of sorts weren't a regular occurrence.

Still, that put her in a bit of a pickle as she carefully stepped through the creature's... organs? Blood? Skin-

"This is so gross!" She couldn't help the words as she visibly shook off her disgust. Reaching the stranger's body, she promptly hesitated as she simply stood in the middle of white, white, and more white goo.

After briefly considering what to do- Given her last attempt at magic had ended in her meeting the aforementioned defence measure, she stilled herself and decided to go for it anyway.

Best case scenario? The spell works and the stranger's mucus-covered form is cleaned up enough for her to try and escort him into the manor proper. Worst case, she gets to meet the defense measure again and ask him who the hell she was interacting with.

Holding out her hand before her, she took in a deep breath and-

"Ydob siht gnirevoc sniats eht evomer!"

The spell covered the crumpled form before her and for a moment looked to work as the cleaning process slowly started before, to her utter surprise, a shockwave of sorts promptly echoed out as she instinctively raised her hands to cover her eyes.

Briefly peeking through, she promptly froze at the sight before her.

All around her, the white stains covering the street had all been swept further away from the stranger's form, the cleaning spell going as far as to have turned the ground beneath the body into pristine condition. The stranger's form itself was no longer covered by the slightest bit of the creature's innards.

And as she stared at her own arms, in open horror, her body visibly twitching as she realized that the worst-case scenario was another event entirely.

She promptly let out a screech as she rapidly started another backward incantation to clean herself of the slime and mucus that had covered every inch of her body.

'Gross, gross, gross,, gross, groossssss!' Her mind helpfully threw its own thought on the matter.

...

The trek back to her manor was a short one. The stranger currently in the same position she'd started with before that giant alien worm had attacked them. Fortunately, he was once again light as a feather, leaving the physical aspect of the journey rather easy to deal with- Unfortunately, he was still unconscious, though that didn't stop him from muttering random words and sayings along the way.

Words she had no clue regarding the meaning of.

"Ban...kai..." Idly glancing towards his face, she found the stranger's expression split into a massive grin, albeit with closed eyes, which wasn't creepy at all. "Say... hello... to... my... little... friend..."

She really hoped that wasn't an innuendo of sorts.

Shaking her head again, she turned her attention back to the now opening doors of the manor, and carefully helped the other up the stairs.

At least he hasn't brought up the fact he was a Shinigami- What even was that, from the future again?

That was something right?

She was never much of a fan of anything related to time travel, whether it was the tv-shows she'd grew up watching or the general theory behind it brought up in her schoolwork of all things- Mostly because the fact that time-travelers never came from the good future- No, they only ever came from ones that involved a line of horrible events.

...

Not wanting to explain to her father why there was someone sleeping in her room of all things- Even if the guy was technically in a coma of sorts, she elected to place his body on top of a sofa in one of the manor's living spaces. She had originally considered putting him on top of a table, though she figured the stranger wouldn't be too happy if he found himself waking up to what looked like an operating table of sorts.

Plus the sofa was a lot more comfortable-

"Hey, Aizen, think I can eat that without dying?"

The stranger's speech pattern seems to have fixed itself- In that, he was no longer pausing after every word. Not to mention she was fairly sure the stranger was just remembering events that had likely gone down- Her mind vehemently crossing out the possibility of time-travel, given he hadn't brought it up since.

Still, judging by the words that came out every time this 'Aizen' was mentioned...

She was really starting to feel sorry for the person.

She had a feeling the guy before her was a bit of an idiot that 'Aizen' had to deal with on a daily basis-

She stiffened the slightest, as she felt the air before her shift, the room growing the slightest colder as her gaze haphazardly started scouring her surroundings before her gaze fell back onto the stranger before her. Her eyes widening as she took in the ethereal hue that started surrounding his form, though the most striking, and worrying part, was the way his mouth seemed to have rapidly started mouthing out words at an inhuman rate- Briefly standing up and taking a step back, she watched as the stranger's body, previously laid out straight onto the sofa, seemed to spazz out uncontrollably- The strange words and speech from before all rapidly coming out as she heard, maybe every fourth? Fifth word? Most of them overlapping each other before, for a brief moment, the very ground beneath her feet felt as if it had shifted the slightest. The body's erratic movement suddenly and immediately stopping dead-still.

"...What the hell did I sign myself up for..?" She remarked, almost muted as she took in the unbelievable calm breathing before her-

She watched, taking a small step closer, as the stranger opened his mouth again- Yet, even before the no doubt strange words had come out... She could feel an almost shift in its tone-

"Fuck..." She paid no mind to the return of the pause. "Dressrosa..."

She wasn't sure who this Dressrosa was, but she had a feeling whatever had gone down with her, had probably needed some time-traveling to fix it.

...

She was convinced she was dealing with a multi-personality basket case.

Why? Because the stranger had gone from what she'd assumed was a happy-go-lucky idiot, judging by the earlier set of babble he'd set on spewing to... Well.

"...Congratulations you've... Brought yourself... Into slavery..."

Under any other circumstances, she would've called the police, the FBI, or frankly any government agency worth a damn. The only thing that had stopped her was the fact that before said line, the stranger had been complaining non-stop about what she assumed was meant to be a pompous, entitled, enslaving lord of sorts. Which considering she couldn't find any signs of online- Having spent the past fifteen minutes trying to search up and find out exactly what a celestial dragon was- She knew it was meant to be human, given the stranger himself, she'd come up with nothing.

Which meant either the stranger was delusional, he was a part of an underworld conspiracy that had no traces online, or he was from another planet.

She wasn't sure which one of the three was preferable.

Still, much like before, it wasn't long before the stranger had started speaking in a more controlled manner, and barring the speeches about ending the 'Royale Institute of Pompous Dickery,' she hadn't heard anything that... Well, convinced her to throw him out of the manor-

He had stopped that creature after all, and considering the call she'd had with her father before it had attacked, she assumed it had been after her.

It wasn't long before the stranger's subconscious speech had, once again, started rapidly overlapping itself, his body once again erratically shaking on the sofa.

When she'd saw the first sign of it coming, she'd immediately settled on leaving the room to make a cup of coffee for herself, intent on waiting it out.

...

Returning back to the room, her cup of coffee held by her left hand, she let out a sigh of relief when she took in the stranger's calm breathing-

Only for a veritable sense of wrong to suddenly fill the room as the stranger's expression split off into another grin, his still-closed eyes bothering her more than ever as he opened his mouth and-

"Hello world, my name is Kira-"

Her eyes briefly widened as she took notice of the fact that, this time, his speech hadn't started off like before. There hadn't been a hint of a pause in between the wor- When the stranger's body immediately started shaking uncontrollably, causing her to stumble backward, his words once again overlapping each other, her worry grew more and more as she took notice of the visible pain showing on the other's face, his shaking unlike before intensifying with every second, instead of calming down, his head visible thrashing on the sofa's pillow-

Instinctively, she promptly placed the cup down on the table and reached a hand out to the stranger's forehead, unsure of why she was doing it- though, to her surprise, it seemed to do the trick as he slowly started to calm down, his breathing labored...

Whatever that was... He clearly hadn't wanted to remember it-

She watched as his eyes, for a moment, briefly opened, locking with her own as she froze, unsure of what-

"Thank you."

She blinked a few times, before nodding once as she removed said hand, only now taking notice of the visible wisps of energy that had covered it for a moment. The energy that immediately dissipated the moment the contact was removed... The stranger's eyes once again drifting off back into sleep.

One thing was certain in the back of her mind, her gaze seeing the other in a newer light, the stranger before her was more than likely brimming with power-

"Zatanna." She froze once again, as her gaze haphazardly turned around, taking in her father's appearance.

Just, in time for the stranger to, for whatever reason, start laughing of all things. His eyes were still closed to the world.

"Dad-" she promptly stood up, quickly taking note of the sheer number of injuries and gashes marring his body as she gasped. "What happened!?" She questioned, numb as she moved towards him, though his eyes never left the laughing stranger.

"I was going to ask you that..." Her father remarked numbly. "How... did you kill that construct?" The question was directed towards her... Though the way his eyes held onto the stranger, she had a feeling he already knew the answer as he immediately turned her around on the spot and put himself before the still chuckling stranger.

When the stranger's chuckle stopped, and instead, subconsciously started speaking again, she found herself immensely worried the moment she noticed a distinct lack of a pause, despite starting what she now presumed was supposed to be a new cycle? Of Memories?

God, she had so many questions right now.

And judging by the look on her father's face, he had even more. Still, considering her father's likely first thought of action... She braced herself to try and convince him that attempting magic on him was a very bad idea.

The stranger's first choice of words in his presence certainly didn't help.

"I am going to systematically destroy the rest of the ninja world."

But at least he stopped laughing?

...

...

"Dad-" Zatanna started as she took a few steps closer to stand by his side, her eyes watching as her father appraised the stranger before them.

"It was foolish to invite him in," He immediately rebuked, as he took a few steps closer to the sofa, his hand held out in an open palm in front of him.

Preemptively, she immediately grabbed hold of the hand, panicked. "I-" Her father's gaze snapped to her own, narrowing the slightest as he lowered it to her wrist. "Maybe, but he stopped that thing, that was after me- I think, and I couldn't just-"

Her father shook his head, softly removing his hand from her grip.

"You have no idea what his intentions are... Besides..." His gaze slowly roamed towards the stranger, away from her eyes as he lowered his hands. "He shouldn't have been able to kill that construct. That alone makes him dangerous-" He raised his hand, an incantation likely on his tongue before once again, she haphazardly reached out for his hand.

"D-don't! Magic doesn't respond very well to him!" She stated out loud, watching as his eyes briefly narrowed as his mouth snapped shut. The beginning of the incantation held. Briefly catching her breath, she let go of his hand once again and sighed, before turning her gaze over to the calm, sleeping form. "Why do you think he's dangerous?" She settled for asking at the sudden silence- the longer she kept him busy, the more likely the stranger would wake up on his own terms... And hopefully, explain himself.

"That construct you saw, wasn't the only one that was sent." Her father calmly remarked, idly taking another step forward. "The other showed up following the end of my show..."

She stiffened the slightest.

"Were people hurt?"

When her father refused to answer, the sinking feeling in her chest grew.

"It took too long for me to stop it..." He remarked, despondent. "Burning it, freezing it, even blowing it up had failed, every other spell I threw at it, bounced back-" she watched as he shook his head, a despondent look in his eyes. "No matter what, it shrugged it off. Even when scattered into millions of pieces, it simply reformed itself."

Her eyes widened the slightest as her gaze swept back towards the stranger. "Maybe it was diff-"

"It wasn't. The one that had attacked you, had split off from the original."

"...How did you?" She started to question, wondering what he had ended up having to do-

"I didn't stop it..." Looking downwards towards her father's hands, she found them visibly shaking. "They shared a link. When the one... He attacked had fallen... Mine had followed in its heel. Collapsing in on itself within seconds." Her father turned a look towards her. "How did he do it?"

She blinked in response, bemused. "I... I don't know- One moment it swallowed him whole-" Her father's eyes widened further.

"It's corrosive."

She held in the urge to gulp at the interruption. "-The next... Well, it blew up from the inside."

Her father took in the words, his bemusement clear for her to see before he shook his head. "It should've simply reformed itself then. Whatever he'd done... had killed it instantly."

She opened her mouth to retort, only for her father, whose gaze was away from her, and stuck frozen on the stranger, to continue, his own words freezing her on the spot.

"Which shouldn't have been possible- Given it had no source of life to begin with. You can't kill, what isn't alive, Zatanna... No... What he did was something far more worrying."

She ignored the way her breathing turned shallow as her father turned a haunted look towards her.

"He destroyed it's very concept."

She found herself speechless as her gaze slowly turned back towards the stranger, her own hands matching the shake in her father's.

"You welcomed a monster into our home."

"

He's a human." The words echoed out of her, almost on instinct as her eyes narrowed. "Who protected me from that- whatever it was. He told me to listen to you, even before that worm-thing showed up."

For a brief moment, her father simply appraised her, his gaze locked onto her own, before nodding once, trusting her judgment. "That does not make him any less dangerous."

Slowly, she watched as her father raised a single hand, while his gaze held her own, his eyes soft- yet resigned. "Do not worry daughter, it is merely a diagnostic spell, nothing more." When she opened her mouth to protest, her father promptly shook his head. "I cannot simply allow an unknown to rest in my home, without knowing what he truly is. It is either that, or I relocate him back to the street, while I still can."

And not giving her a chance to protest that, her father echoed out the incantation 'Terces ruoy laever', the words immediately forming wisps of energy that flowed out of his hands to cover the stranger, before to both of their surprise, instead of receiving a form of knowledge, a single large thread suddenly appeared just above the sofa. Something that caused her father's eyes to widen as he promptly took a step back, pulling her behind him, his body set into stance-

Yet the thread did nothing more, but merely float before them. Her mind noting the fact it was slowly, but surely, breaking down piece by piece. Each particle breaking off and floating into the air above it- Following one with her gaze, her eyes briefly widened as she took in the thousands that filled her ceiling.

Her father's own, thoughtful, eyes merely stared at them, in open wonder.

Both of their gazes, however, promptly set back down on the stranger, as his body visibly stirred, his eyes opening slowly, as he rose up into a seating position, a single hand covering his face, while the other covered a... Yawn?

The stranger blinked, bemused as he stared at the two of them.

"Okay. Who woke-" He blinked once as he stared at her, his head tilting to the side. "Oh fuck me-"

Her father promptly took a step forward, anger coursing through his eyes. "You are not-"

"-I am in the DC universe." The stranger finished with an audible sigh of frustration, completely ignoring her father as he covered both of his eyes with his hands.

"DC Universe?" Her father quickly questioned, his tone changing rapidly- As if he hadn't just assumed- She shook her head and merely listened in, curious herself. "Are you from another?"

The stranger uncovered his eyes, instead electing to cross his arms around his chest as he sighed and leaned back into the sofa.

"Admittedly, not my first choice... Or seventeenth." He rambled, ignoring her father's question. "Too many freakin' weirdos- But I guess I don't really get to choose so..." And, as if he'd just remembered that he was, one, in another's home, and two, had people staring at him. The stranger blinked again and let out another sigh. "Give me a moment, Zatara, my last-"

"How do you know my name?"

"-set of memories hasn't finished uploading. Then I can answer your questions." He deadpanned. "Zatanna was very helpful in helping me avoid putting a hole in society as an entrance." He smiled towards both of them, showcasing a gleaming set of shark-like pearls. And as if to prove his point, they both watched as the thread hanging above the stranger promptly started breaking apart at a much faster rate, practically disintegrating into hundreds of more pieces that followed the rest up. The stranger himself promptly jumping up to stand on both feet as he stretched out, a relieved expression on his face. "Neat trick by the way." He deadpanned, as he stared upwards himself.

"Now. Where was I- Oh, right. Adventure number five. I do believe you had some-" Yet, whatever he'd been about to say, promptly stopped as he stiffened. Her own question, aswell as her father's judging by the way his own gaze was locked just upwards of the boy, frozen in its tracks.

As just as the thread had neared its end, with perhaps the barest of an inch left on it- All three of them promptly watched as the space next to it, promptly twisted, the very air at the end of thread shattering as to Zatanna's surprise, the thread seemed to grow- or perhaps unravel more of its self? A small part of her wondering if it was another cycl-

Yet the moment her gaze lowered itself towards the boy, she found open horror dancing in his expression.

"...What? There's... More? But..." Unlike before, the pauses in his words this time, caused a shudder to go down the length of her spine. His eyes widened further. "Sirius Black..? But... I never..." His jaw hung loose as his eyes seemed to shift. "...That's not possible- Not unless this isn't the main-"

And just like that, realization seemed to dawn in the stranger's eyes, a realization that for whatever reason... Seemed to suck the energy out of him, as his body practically crashed back into the sofa, a completely lost look taking over his expression.

Both father and daughter, tentatively shared a look of confusion, before they slowly turned back towards the stranger staring ahead into nothing.

"...I am... pointless?"

And just like before, the thread started rapidly breaking down, and with every piece that flowed upwards, the memories that likely encompassed them made the expression on the stranger worse by the second- To the point Zatanna found herself walking past her father, her own worry, at the sheer distraught that was rapidly filling the other's gaze, rising.

She wasn't sure why, but her empathy for a moment seemed to strike her harder than she'd ever felt-

Yet the moment the thread seemingly neared its end- Her own thought on what she presumed was a mountain's worth of memories been shoved into someone's brain been extremely unhealthy ignored, she briefly contemplated reaching a hand out- Only to watch as the stranger promptly stood up, causing her to take a step backward, her own fathers shadow showing how the man had practically jumped to her side- Even if nothing came of it as the stranger seemingly stared at her for a moment before-

"Enough... I don't want to know anymore..." A single beat passed, one that her father for whatever reason, promptly pulled her back, her own feet listening as she took several steps backward, her hands instinctively going to her face as she felt more strange energy suddenly start building up at the base of the stranger's feet before-

"Finite Incantetum."

And with those simple words, a veritable gust of wind swept through the indoor room, her hair sweeping backward as her father immediately brought her to his chest, covering her head with her own hands, though her gaze never left the distraught stranger.

For a moment, the very air in the manor turned unbreathable, as the sounds of crashing belongings and trinkets in every other room suddenly echoed out. As books dropped from their shelves, and hidden doors and compartments suddenly sprang open- Three of which opened in the very room they were in, while the sofa, behind the stranger, promptly vanished without a trace, the only hint it was ever there been the magical wisps of energy left in its wake.

Everything remotely magical in nature, from the furniture to the tomes, to the mechanics that filtered throughout her home, had for a moment stoppedfunctioning completely, or outright disappeared.

For a single moment, her labored breathing ignored, even as her father visibly shook, terror openly showing through his eyes, the three of them merely stared at one another- Before, the stranger simply started walking past the two of them, an uncaring, and lost look in his eyes.

"...They treated me like a monster, for saving them..."

The moment she heard those words, she couldn't help but break off from her father, her feet practically twisting on the spot as she made to call out to the stranger, only to watch as an audible crack sounded through the air, the stranger disappearing from sight as the air itself visibly warped for a single second.

...

A/N The incantation was supposed to reveal The SI's secret to Zatara, but it backfired and it revealed a secret, which I am fairly sure everyone got (If you haven't leave a pm), to the SI. Had the SI not ended the spell/memories then and there, he would've learned about the Marvel SI's memories too.

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