Chapter 73: I Did It In Front Of My Sisters!

"…"

Nanashi blinked.

She wasn't joking.

First, it was Nami selling herself to him, and now Mitsuri outright proposing.

Beautiful girls offering themselves to him one after another—how could he possibly refuse?

Without hesitation, he wrapped his arms around Mitsuri's waist.

Even with her muscle density eight times that of an average person, her waist was still soft and delicate.

A perfect balance of strength and femininity.

"Then don't regret your decision."

He leaned in—and boldly claimed her lips.

"Mmm!"

Mitsuri's eyes widened in surprise.

Her cheeks flushed a deep red, but she didn't resist.

Instead, she tried her best to respond, albeit shyly.

"T-This… this…!"

Nezuko stammered, her face burning.

Her hands flew up to cover her eyes, but she left a massive gap between her fingers to peek through.

Kie and Tamayo glanced at each other, then quickly looked away—both too embarrassed to keep watching.

The two innocent women clearly couldn't handle the sight.

After a long moment, the two finally parted.

Mitsuri, still dazed and breathless, collapsed against Nanashi's chest.

Her body trembled, weak from the intensity of the moment.

Her snow-white skin glowed under the moonlight, her eyes shimmering with emotion.

Nanashi gently lifted her chin, his gaze firm.

"From now on, you belong to me."

Mitsuri's heart skipped a beat.

With shining eyes, she nodded eagerly.

"Yes! Lord Nanashi!"

She snuggled into his embrace, feeling a warmth she had never experienced before.

She had finally found a man who didn't fear her strength— but embraced it.

"Mom, I did it!" she thought excitedly.

Nanashi let out a chuckle.

If he was going to marry, he wouldn't settle for just one wife.

A simple wedding wouldn't be enough.

He'd need a grand ceremony—perhaps even a wedding spanning multiple worlds.

A union of all the heavens and realms.

Now that would be something.

"But that's a plan for another time," he thought.

They only had one more day left in this world.

There was no rush.

Aqua finally purified the last lingering soul.

As she opened her eyes, she couldn't contain her excitement.

"My faith has increased so much!"

The increase in faith meant her divine power had grown.

For a goddess, this was a huge deal.

Though she hadn't earned many Doomsday Points, her gains were no less valuable than anyone else's.

Meanwhile, the Demon Slayer Corps was undergoing a transformation.

With no more demons to fight, they needed a new purpose.

Kagaya Ubuyashiki was already working on integrating the corps into society, ensuring that every swordsman had a future beyond slaying demons.

The Butterfly Mansion remained open, though now it wasn't filled with injured warriors.

Thanks to Aqua's healing magic, all wounds had been fully cured.

She had become a revered figure among the Demon Slayers.

They now worshipped two deities—

One was Aqua, the Goddess of Healing.

The other was Nanashi, the one who slew Muzan.

Nanashi and his companions spent the night in the Butterfly Mansion.

That evening, Kanae took the opportunity to stay with Shinobu and Kanao.

The sisters talked for hours—about life, about the past, and about their new futures.

Kanae was overjoyed to see that Kanao had begun expressing emotions.

She was finally alive inside.

Shinobu eventually revealed the truth—that Nanashi was responsible for Kanao's emotional awakening.

"It was just one of his strange experiments," Shinobu explained, shaking her head.

But when Kanae heard Nanashi's name, she noticed something.

The moment his name was mentioned, Kanao's usually blank eyes softened.

They became full of warmth and emotion.

"Hmm!"

Kanae suddenly let out a soft gasp.

Shinobu and Kanao turned to her in alarm.

"Sister! Are you feeling unwell?"

Shinobu's voice was filled with concern.

Kanae's entire body flushed red.

Her breathing became uneven, her fingers clenching the fabric of her robe.

A strange aura radiated from her—one filled with an undeniable heat.

Her eyes glazed over, unfocused, as if she were lost in a trance.

Even Kanao, who rarely showed emotion, frowned in worry.

"No… don't look at me…" Kanae murmured weakly.

Her hands wandered over her own body, moving lower—

"!!!"

Shinobu's face turned scarlet.

Kanao stared in confusion.

Right in front of them—Kanae was losing control!

By the time the next night arrived, everyone had finally had their fill of fun.

It was time to leave.

Strangely enough, both Kanae and Mitsuri were nowhere to be seen.

They didn't even come out to say goodbye.

"We're leaving now," Nanashi announced.

Everyone gathered for their departure.

Nanashi, however, held onto Nezuko, Kie, and Tamayo's hands.

He wasn't sure if the chat group would allow them to cross dimensions.

But he refused to leave them behind.

This was the only way to be safe.

"Nezuko! Mom! You two must be happy!"

Tears welled up in Tanjiro's large, expressive eyes.

Nanashi patted his head reassuringly.

"Don't worry, Tanjiro. I'm here. I'll bring them back when I get the chance."

Tanjiro looked up at him, eyes filled with gratitude.

As Nanashi and the others faded from sight, their figures disappearing into the void—

The last thing he saw was Nezuko and Kie reaching for him.

"…"

Kanao tightened her grip on Shinobu's hand.

Shinobu, noticing the subtle gesture, suppressed a wry smile.

This child… she really cares about him.

"He'll be back," Shinobu murmured, more to herself than to Kanao.

She wasn't sure when, but he wasn't the type to disappear forever.

Her thoughts drifted to the events of the previous night.

The blush returned to her cheeks.

Her older sister, Kanae, had… done that in front of her and Kanao.

And after that… she had wrapped herself in a blanket, trembling with embarrassment, barely able to explain herself.

Shinobu's face heated up all over again.

"That was way too much!"

Nanashi reappeared in his room.

The three women—Nezuko, Kie, and Tamayo—stood there, curiously observing their new surroundings.

Everything was so different from their time.

They examined the furniture, running their fingers over the smooth textures.

The unfamiliar materials, lights, and devices fascinated them.

Nanashi leaned against the wall and stretched.

"It's already late. You should rest first."

He glanced at his bed.

"You three take the bed—I'll sleep on the couch tonight. I don't have extra blankets at the moment."

The three of them exchanged looks.

Their expressions showed hesitation.

"You're our master," Tamayo spoke softly. "We can't take your bed while you sleep elsewhere."

Nanashi raised an eyebrow.

Then, half-jokingly, he smirked.

"Then… how about we all sleep together?"

To his surprise—

The three nodded, completely unfazed.

"…"

Wait, what?

His bed was big enough.

Fitting four people wasn't an issue.

But…

The real challenge?

Trying to control himself.

Especially when Kie and Tamayo were facing him, breathing softly in their sleep.

Their warm breaths brushed against his skin, sending shivers down his spine.

Even though they weren't doing anything on purpose, their mere presence was enough to test his patience.

He gritted his teeth and did the only logical thing—

He opened the chat group.

Shinobu had tagged him.

Shinobu: "Nanashi-kun, please… take good care of my sister."

Nanashi: "Of course. She's my sword spirit now."

March 7th: "Sword spirit? What's that?"

Nanashi: "It means Shinobu's sister, Kanae, has fused with my Zanpakutō and now exists as my sword's spirit."

March 7th: "Whoa! That's amazing!"

Saeko: "Is Shinobu's sister pretty?"

Nanashi: "Very. Just as beautiful as Shinobu."

Shinobu: "…"

Shinobu pursed her lips.

There was something strange about hearing those words from him.

Especially after what had happened last night…

When her sister had completely lost control.

Right now, Shinobu sat beside Mitsuri's bed.

Mitsuri lay there, exhausted, her body weak and limp.

Her face flushed, her expression dazed—

There was no doubt about what had happened.

And there was only one man in the entire Butterfly Mansion last night.

Nanashi.

The room she had arranged for him.

The only man there.

Shinobu's emotions were complicated.

Even more so because—

Her own sister now shared a deep connection with him.

And if that wasn't enough—

Kanao's eyes had started shining with emotion every time Nanashi's name was mentioned.

Shinobu massaged her temples.

"What is happening to this household…?"

Back in the chat, Lemuel suddenly spoke up.

Lemuel: "Oh? What about Miss Mitsuri?"

Nanashi froze.

"…"

Ah.

Right.

Lemuel had been sleeping in the room next to his.

And considering how thin the walls were in the old mansion…

The soundproofing… wasn't exactly great.