Chapter 13: Hashira Assembly – Meeting the Bald Hero

At the Ubuyashiki Estate, the air was heavy with tension. All the Hashira stood in a line, their faces serious, their hands resting on their weapons. They had been summoned urgently — a matter of the utmost importance.

Kagaya Ubuyashiki, the frail leader of the Demon Slayer Corps, sat in his usual position, his calm smile betraying no fear. "My dear Hashira," he began softly, "I have summoned you today… to discuss a new force that has entered our world."

The Hashira exchanged glances. This wasn't about Muzan or the Upper Moons — it was something else.

"Who is this new force?" Sanemi, the Wind Hashira, asked, arms crossed tightly.

"His name is… Saitama," Kagaya said. "A bald man who, with a single punch, obliterated an Upper Moon."

Gasps filled the room.

"That's not possible," Obanai Iguro, the Serpent Hashira, said sharply. "Even for the strongest Hashira, defeating an Upper Moon is a life-or-death struggle."

Giyu Tomioka, ever silent, simply furrowed his brows. He had fought Akaza and understood the sheer gulf in power between Upper Moons and even the most skilled slayers.

Shinobu Kocho tapped her chin, curiosity dancing in her eyes. "A bald man, no sword, no breathing technique… and yet he could kill an Upper Moon?"

"Not kill," Kagaya corrected softly. "Erase."

That word settled over the Hashira like a weight. To erase a demon — no regeneration, no struggle, just… gone. It was terrifying.

"Where is this Saitama now?" Rengoku, the Flame Hashira, asked, his voice firm and filled with enthusiasm. "I would like to meet this man of such strength!"

---

Back at the Butterfly Estate

"Why do you guys need to gather all these fancy warriors just to meet me?" Saitama asked, munching on a rice ball, crumbs falling onto his cloak. "I'm not anyone special."

Tanjiro, sweating nervously, tried to explain. "Saitama-san, the Hashira are the strongest slayers in our corps. They need to understand your power if we're going to work together."

Saitama sighed. "Sounds like a hassle."

"Please," Tanjiro bowed deeply. "It's important."

Saitama scratched his bald head. "Fine. But after this, I'm taking a nap."

---

The Hashira Meeting

The Hashira stood in a line, watching as Saitama strolled into the estate's garden. His dull, uninterested face stood out immediately. There was no warrior's aura, no lethal intensity. He just looked… bored. And bald.

"This is the man who destroyed an Upper Moon?" Sanemi's voice dripped with disbelief.

"Maybe he's hiding his true power," Mitsuri Kanroji, the Love Hashira, said, eyes sparkling with curiosity. "Or maybe he's just really humble!"

"Or a fraud," Sanemi muttered.

Tanjiro stepped forward, desperate to calm the situation. "Everyone, please! I saw it with my own eyes. Saitama-san's strength is real."

Giyu stepped forward, his calm voice cutting through the tension. "There's only one way to know."

He unsheathed his Nichirin Blade. "We spar."

Saitama blinked. "Huh?"

"Don't worry, I'll hold back," Giyu said.

Saitama scratched his head. "I mean, okay. But if I accidentally break something, it's not my fault."

---

The Spar Begins

Giyu moved like lightning, his Water Breathing techniques flowing seamlessly. His sword was a blur, slicing toward Saitama's neck — a killing blow if Saitama had been a demon.

Saitama simply stood still.

CLANG!

Giyu's sword stopped dead against Saitama's bare skin. No cut. No scratch. Not even a mark.

The Hashira's eyes widened in shock.

Before Giyu could recover, Saitama flicked his finger toward Giyu's sword, and the blade shattered into countless fragments.

"Oops," Saitama said casually. "Guess I overdid it."

The Hashira froze. Even Rengoku's ever-burning smile faltered.

"Impossible…" Muichiro Tokito, the Mist Hashira, whispered.

"That wasn't even a punch," Obanai muttered. "That was just… a flick."

The earth itself seemed to groan under the weight of what they were witnessing. A power so vast, it didn't belong to a human — or even a demon. It was something from beyond.

---

Shinobu's Curiosity

Shinobu stepped closer, eyes glittering with fascination. "Saitama-san, may I ask… what breathing technique do you use?"

"Breathing?" Saitama tilted his head. "You mean like… air?"

"No… like Water Breathing, Flame Breathing, Insect Breathing—"

"Oh, nah," Saitama waved her off. "I just do some push-ups, sit-ups, squats, and a 10km run every day."

The silence was so deep, you could hear a leaf fall.

"That's it?" Sanemi's voice cracked with disbelief. "You're telling me you destroy Upper Moons with… basic exercise?!"

Saitama shrugged. "And I don't use AC in summer. Builds mental toughness."

The Hashira's brains collectively broke.

"Is he… serious?" Tengen Uzui, the Sound Hashira, whispered.

"This has to be some divine joke," Obanai muttered.

"Wait, Saitama-san," Mitsuri's hands clasped together, her eyes sparkling again. "If you're that strong, does that mean you're… looking for a wife?"

"Uh…" Saitama blinked. "Not really."

Mitsuri pouted, heartbroken.

---

Kagaya's Wisdom

Kagaya smiled softly, as if the absurdity of it all was perfectly natural. "Saitama-san, regardless of the source of your strength, the reality is clear. You are a force unlike anything we have seen."

Saitama scratched his cheek. "I'm just a hero for fun."

"Then," Kagaya bowed slightly, "perhaps you would honor us by helping us defeat Muzan Kibutsuji."

Saitama yawned. "Sure. If he's causing trouble, I'll punch him."

The simplicity of the statement shook the Hashira to their core. To them, Muzan was the ultimate evil, the enemy they had spent lifetimes preparing to face. And to this bald man, he was just… another punchable guy.

---

Nightfall

As the meeting ended, the Hashira dispersed, their minds racing to process what they had seen. Some were suspicious, others in awe, but all knew one thing: The world had changed.

Tanjiro stood beside Saitama, gazing at the moon. "Thank you for agreeing to help."

"No big deal," Saitama said. "Just wake me up when it's time to fight."

As Saitama lay down under a tree and immediately fell asleep, Tanjiro couldn't help but smile.

The Demon Slayer Corps had gained a hero unlike any other. And soon, Muzan would learn that some enemies couldn't be predicted — or understood.

Some enemies just showed up, bald and bored, and punched their way through destiny.

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End of Chapter 13