UBUYASHIKI ESTATE – LATER THAT DAY
ALEX'S POV
As I walked back from my talk with Kagaya, I couldn't help but sigh at his very fatherly demand.
"I will only let Shinobu go with you… if you properly have an engagement with her."
Yeah. The man had just witnessed me help save the world, but still wouldn't trust me with his daughter's figure unless I put a ring on it.
Can't really blame him, I thought to myself. If I ever become a father… I'd probably be just as suspicious. It's part of the job description.
My internal thoughts were cut short as I noticed something strange.
I spotted Rengoku, Giyu, Muichiro, Gyomei, and Sanemi all hiding awkwardly near the side wall of the estate—stacked one behind the other like a failed ninja formation—peeking around the corner with serious looks on their faces.
"Ah, guys—" I began.
But before I could finish, Gyomei silently lumbered up from behind me and suddenly scooped me up like a toddler.
His massive palm covered my mouth with gentle precision as he guided my line of sight around the corner.
"Shhh," he whispered.
I blinked. Then I saw it.
Obanai Iguro was standing just a few feet away, near the garden wall, with Mitsuri right in front of him. He looked like he was preparing to face a demon barehanded.
"I—I—I li—like you, Mitsuri-san… w-will you… Marry me?"
His voice cracked more times than a broken radio, and his entire body trembled like a nervous squirrel during thunder.
Behind the wall, everyone—including me—nodded in serious approval.
Even Gyomei, who was still holding me like a plush toy, gave a solemn, monk-like nod.
Mitsuri's face was beet red. Her hands fidgeted wildly, and her eyes kept shifting in every direction except directly at Obanai.
"W—Well… Obanai-san… I originally joined the Demon Slayer Corps because I wanted to find a husband stronger than me…"
"I met many people—even Alex-san, who's basically a walking disaster of strength…"
"But… I realized I was already in love with you... I accept your feelings."
Her voice trembled, eyes darting like fireflies, and Obanai… just… collapsed.
"Ah… dammit," I whispered as all the men who were spying collectively facepalmed.
"Obanai-san! Are you okay?! Can you hear me? Waaah… What happened to you?!" Mitsuri panicked, crouching beside him and lightly smacking his cheeks to wake him up.
The gentle smacks escalated to her shaking him like a noodle bag.
Eventually, Obanai groaned back to life, and when he opened his eyes, he found himself inches away from Mitsuri's blushing face. The two froze, their foreheads nearly touching. As they move closer--
But then…
CRACK.
A branch snapped behind them.
They both turned sharply—only to see Giyu and Sanemi standing wide-eyed, completely busted.
Before they could say anything.
Obonai broke into a fake stance.
"Snake Breathing—!"
Mitsuri joined with wide-eyed panic. Still blushing.
"Love Breathing—!"
Giyu tried to play it cool, but then Sanemi pointed a shaking finger to the side.
"Wait! There are more!"
But when they turned to look, the rest of us had vanished into thin air.
"I swear there were at least three more!"
Sanemi cried, spinning around.
Behind him, Obanai had silently risen to his feet.
Giyu didn't wait. He ran and escaped successfully.
And with that, Obonai's focus zeroed in on him like a rabid hound.
A loud scream echoed moments later.
"WAAAAHHHH!"
Back near the wall, Gyomei, Giyu (from a new hiding place), Muichiro, and I stood together with hands solemnly clasped.
"God bless him," we all murmured in unison.
```````````````````````````````````
DEMON SLAYER CORPS – one day later
GENERAL POV
The sun was low on the horizon, casting long golden beams over the gardens of the Ubuyashiki estate, where vibrant cherry blossoms danced gently in the breeze.
Despite the end of a brutal war, there was a peaceful hush in the air, as if nature itself held its breath for the occasion.
Tonight was no ordinary evening.
Tonight, the engagement ceremony of Alex and Shinobu, along with Obanai and Mitsuri, would take place—an event blessed not only by the Demon Slayer Corps but by the very fate they had fought so hard to protect.
Alex stood tall in a formal dark-blue montsuki kimono, a traditional five-crested family robe, despite not having a Japanese family crest.
Instead, Ubuyashiki himself had sewn a custom symbol for him—a cosmo flower, representing rebirth, warmth, and light. It shimmered slightly under the golden setting sun.
Beside him stood Cara, who was also dressed in an elegant crimson furisode. I was planning to engage with Shinobu so that Kagaya could easily allow her to go with me without any constraints.
I also asked Cara if she wanted to engage together as we are already serious, and she said she would do so at Marvel World. After that, I didn't say anything else.
Shinobu, on the other hand, was breathtaking.
She wore a lavender-colored uchikake embroidered with butterflies and wisteria petals, trailing behind her as she walked. Her hair was styled in a traditional shimada-mage, adorned with kanzashi hairpins made of silver and amethyst.
Her eyes sparkled—not from makeup, but from sheer joy, and perhaps, nervous excitement.
The ceremony was held in the central courtyard, with lanterns strung between wooden beams, casting a soft amber glow as twilight deepened.
The Ritual
As per Taisho-era custom, the engagement began with a yuino (結納) ceremony, an exchange of symbolic gifts between the groom's and bride's families well on Alex side it was Cara. While Alex lacked blood relatives in this world, Ubuyashiki himself had stepped in as his honorary guardian.
From Alex's side, a small wooden box wrapped in silk was presented, containing:
Katsuo-bushi (dried bonito) – for strength and endurance in marriage.Konbu (seaweed) – representing joy and children, playing off the word "yorokobu" (to be happy).
A custom-woven silk sash – signifying the binding of two souls.And most precious of all: a silver butterfly-shaped ring, forged by the swordsmiths themselves, etched with Shinobu's family kanji.
From Shinobu's side, she presented:
A folded hakama she had sewn herself, signifying her acceptance and devotion.
A small medicine box filled with rare herbs—symbolizing her wish to protect his health, always.And a simple scroll, handwritten in elegant brushstrokes:
"Even if you had no strength or power, I would still choose you.
But I'm glad fate gave you both—so you could live long beside me."
Alex had to take a breath before responding.
"I came to this world not knowing what I would find.
But now I know I found the reason I was brought here."
There were tears in many eyes—including Sanemi, though he pretended it was dust.
Now it was Obanai and Mitsuri's Turn
Obanai, for once, wasn't covered by his bandages. He looked incredibly awkward in his formal wear—a muted green haori embroidered with snakes—but the way he trembled when standing beside Mitsuri was… oddly endearing.
Mitsuri wore a brilliant peach-pink furisode, patterned with hearts, plum blossoms, and flowing silk. Her hair had been braided and adorned with soft pink camellias, and she looked like a blushing maiden from a woodblock print come to life.
When it was Obanai's turn to speak, he bowed deeply.
"I never thought I'd deserve love. But I trained to protect it anyway.
I'm grateful... that the one I protected is the one who returned it."
Mitsuri sobbed and tackled him in a hug. The guests collectively cheered.
The engagement banquet followed, set under an open canopy with tatami mats, traditional lacquered dishes, and sake served in porcelain cups.
Swordsmiths, slayers, and villagers alike shared laughter, toasted to the future, and exchanged stories of survival and hope.
Zenitsu cried half the time—partly from joy, partly from realizing his own turn might be coming with Nezuko.
Ubuyashiki watched from a shaded pavilion, his children beside him, smiling faintly.
"Let this be the dawn of peace," he whispered.
As the night wore on, music from a biwa and shamisen floated through the air, while Shinobu leaned into Alex's side, sighing in contentment.
"Are you happy?" he asked her.
"Mhm," she smiled, eyes closed. "I didn't think I could be… after all we lost. But somehow, I am."
Cara rolled her eyes from across the table. "Ugh. If you two start kissing in front of me, I'm grabbing sake and throwing it."well she was so no against that night but still did as she is to o shy.
They all laughed.
Afte the engagement and all the ritual we stood before the towering memorial pillar—its stone face etched with the names of every Demon Slayer who had fallen in our long and bloody war against the demons—an air of solemn silence surrounded us.
On one side, Alex and Shinobu carefully placed a ceremonial plaque for blessing in tribute, while Mitsuri and Obanai did the same on the other.
Despite the reverence of the moment, a bead of sweat slid down my temple—not from heat or grief, but from a different anxiety entirely.
How the hell am I supposed to explain this to Mr. Anish? I thought with a nervous chuckle.
Just one isekai trip and I've already started a harem and gotten engaged… He'll understand, right?
After the memorial, the rest of the day was filled with quiet celebration.
Many Demon Slayers, now free of their life-and-death duty, found purpose again.
Thanks to Kagaya Ubuyashiki's vast connections, they were offered jobs and places to live.
However, he strictly warned everyone not to spread any knowledge of Breathing Techniques to the outside world.
Those arts were born to combat demons, not to be misused in wars or sold as weapons. It was a sobering reminder that humanity, even in peace, could still be its own worst enemy.
I also advised the remaining members of the Corps to avoid getting involved in any future wars—specifically warning them to stay far away from Hiroshima and Nagasaki.
Even though history hadn't confirmed it yet, I knew too much. Cara had looked into this world's past, and what she found chilled us both: it was an exact replica of my original world's timeline.
Currently, Japan was in the Taishō period. The year? Early 1914. And that meant one thing—World War I was about to erupt. The second one would follow a few decades later.
It would be tragically ironic if, after all we did to save them from demons, they ended up dying in some global war or genocidal event. I didn't tell them everything.
Maybe it was hypocritical, keeping such catastrophic knowledge to myself.
But some things—like Japan's imperialist path and the atrocities that came with it—needed to be confronted and dismantled in due time. That wasn't something I could erase with a single conversation.
So, I stayed silent.
After the ceremonies and final goodbyes, Shinobu, Cara, and I decided to take a break—a real vacation for a week. The three of us traveled together, laughing, exploring, and simply living.
We visited the majestic Mount Fuji, wandered through the vibrant streets of early 20th-century Tokyo, and marveled at a Japan bustling with potential and untouched by the devastation to come.
Along the way, we caught wind of some heartwarming developments: Zenitsu and Nezuko had grown surprisingly close, while Tanjiro and Kanao had become nearly inseparable.
Shinobu smiled fondly at the news, clearly happy that Kanao had finally found someone she could open up to.
Moved by their bond, Shinobu made a decision. She transferred ownership of her lands and properties to the girls she had mentored and cherished: Nezuko, Kanao, and Aoi Kanzaki, along with Sumi.
It was a gesture that symbolized the end of an era—and the beginning of a new, hopeful one.
With heartfelt goodbyes and words of appreciation shared among us, the final chapter of our journey in this world quietly closed.
Luggage in hand, Cara, Shinobu, and I stood together at the edge of our departure, smiling as we waved off the friends who had become family.(Even though I could put the luggage in inventory but having an farewell empty handed will look as if I am a beggar).
To them, it looked like we were simply moving abroad—leaving Japan to settle in a foreign land. They didn't know the truth.
They didn't know about Marvel. And I had no intention of telling them either. Not because I didn't trust them, but because it was a different world—literally. One they didn't need to be burdened with.
Shinobu, ever the composed one, helped stage our story. She spread the word that we were relocating to a distant country for new opportunities and exploration. At first, some were skeptical—especially Mitsuri, kanao , Nezuko and Tanjiro.
Their eyes held a quiet sadness, unsure if they'd ever see us again. But we reassured them with soft smiles and promises that we'd return to visit every year.
And now… that promise wasn't empty.
With all the main and side missions completed, the once-unstable time flow between this world and the Marvel Universe had finally stabilized. Time now flowed equally between both realms.
There wouldn't be any bizarre time skips or disparities anymore. No more coming back to find decades passed in one world while only days had passed in another. It was synchronized now. Clean. Simple. Perfect for interdimensional tourism.
As the three of us made our way toward the port—a misty harbor filled with merchant ships and departing travelers—we followed through with our plan.
We even bought tickets for a ship headed west, all part of the act. But of course, that was only half the journey.
Once we were far enough, with the sea breeze brushing our faces and the last rays of the sun sinking into the horizon, we gathered in a quiet corner of the deck.
Then—with a flash of light and the faint hum of teleportation—we vanished.
Just like that, we were back in Marvel.
`````````````````````````````````
MARVEL WORLD
MAY 2, 1998
ALEX'S HOME – THIRD PERSON POV
The quiet hum of space warped slightly as a ripple of energy shimmered through the familiar air of the room. In the same place where Alex had once vanished alone, he now returned—accompanied by someone else.
Still dressed in the traditional attire of Japan's Taishō period, the two figures stood in the middle of the room. Laughter echoed softly from within.
"Wow… is this your house, love? It's beautiful," came a gentle, feminine voice filled with curiosity and awe. The comment was followed by the sounds of footsteps and light conversation.
Just outside the room, Mr. Anish sat at a desk piled with papers, diligently organizing a stack of documents related to the company's growing portfolio.
Unaware that Alex had returned—or that his once-small company had transformed into a rising corporate powerhouse in his absence—he hummed quietly, focused.
Though they hadn't yet reached the scale of Stark Industries or Oscorp, the company Alex left behind had grown rapidly, closing the gap with startling speed. The turning point? The cosmic cloud incident.
After the disaster involving Victor Von Doom, the market confidence in Doom Industries collapsed. Stocks plummeted, and the opportunity had been too good to ignore.
Through Alex's advanced planning, and with the tireless support of "Cara" and "Spade"(they can be present anywhere as the core is just computer programming like Jarvis)—machines modeled by Cara herself—the company had seized the moment.
These machines weren't sentient like the real Cara, but they were efficient, obedient replicas capable of executing his economic directives with machine-level precision.
Amid the ongoing IMF crisis that rocked the Asian market with that opportunity ,they had strategically bought up large chunks of Doom Industries stock and diversified across several other sectors.
One such venture was the anime studio Alex had instructed them to set up in Japan.
Initially, he had hoped to dominate the manga industry, only to be met with a frustrating discovery: this world's Japan already had the same manga and anime franchises as his original world.
Undeterred, he pivoted. If he couldn't create original manga, he'd make high-quality anime adaptations of lesser-known gems, or even original projects. Thus, the anime studio was born.under the label of proxima.
Another investment was a publishing company which can be executed as the books of his original world are not here.
Though Alex dreamed of releasing legendary series like A Song of Ice and Fire, The Hobbit, and Harry Potter, he was holding most of them back for strategic reasons. So far, only Harry Potter has been handed over to Mr. Anish to publish.
as to create buzz then release these books
And then there were the big hitters:
Facebook, a budding social platform.
Amazon-inspired delivery services, rapidly expanding.
Proxima Studios, a film production house, is already generating buzz across the entertainment industry.
But some vultures that are already in the business won't let this studio run for too long
In just three months, these projects had changed everything.
And now, Alex was back.
````````````````````