Dungeon ni Deai wo Motomeru no wa Machigatteiru Darou ka — Kiritsugu Emiya's Heroic Spirit Epic
When Kiritsugu Emiya arrives in the world of Dungeon ni Deai wo Motomeru no wa Machigatteiru Darou ka, wielding a sword in one hand and a forging hammer in the other, the glory of the Heroic Spirit blooms once more.
Ais: "I wish to fight alongside Shirou — [Fantasy Greatsword: Heaven's Fall]!"
Ryu Léon: "Shirou taught me what true justice is — [Army of Justice]! Infinite God of Justice, emerge!"
Riveria: "The blessing of the Elf Queen will always be with you — [Elf Homeland at the World's End]!"
Tsubaki: "This blade transcends the divine realm. It is forged for you — [Heavenly Cloud Sword: Heavenly Origin Sword Control]!"
Haruhime: "Shirou, this humble girl prays for your victory in every battle and eternal glory — [Suiten Nikko Amaterasu Yano Shizushizu Ishi]!"
Wei Gong Shirou: "I have no intention of becoming a Hero of Justice. I only want to protect those I love… Here I come, Black Dragon. Do you still have enough life left?"
"I have fought the good fight. I have finished the race. I have kept the faith. Henceforth, there is reserved for me the crown of righteousness."
A tattered soul dragged its weary steps across an endless snowfield, finally arriving at its destination.
"So this is the end… Is this truly my end?"
The journey had lasted far too long.
The man who once pursued the ideal of becoming a Hero of Justice, only to abandon it in favor of protecting the happiness of those closest to him, had burned away both body and soul. Now, at last, he had reached his deserved conclusion.
"Ah… what a journey," he murmured. "Like chasing an invisible moon beneath an endless night."
He closed his eyes. His lingering soul began to sink, as though falling into an infinite sea of nothingness.
The story of the man named Wei Gong Shirou should have ended there.
—but it did not.
Rain poured relentlessly from the sky.
The downpour was icy, washing everything away without mercy.
Wei Gong Shirou suddenly opened his eyes.
A wooden ceiling greeted his gaze. The warmth of blankets surrounded him, and a faint tingling sensation spread through his body. His wounds were healing—far faster than they should have.
This was not a place he recognized.
Moonlight streamed through a nearby window, illuminating the youthful face of a red-haired boy.
"Where… am I?"
He remembered everything clearly.
He had died.
And yet, he was alive.
Not only that—his body had reverted to that of a child.
From the moment he awoke in this world, he had been imprisoned within a Dungeon. His captors belonged to an organization known as the Dark Faction, a group engaged in human trafficking.
Seizing an opportunity, he had snatched a weapon from his guard and killed the man without hesitation.
Though his body was young and weak, stripped of magic and physical training, his combat instincts remained. More importantly, the resolve etched into his soul had not faded.
He attempted to escape, but was quickly captured.
The one who stopped him was monstrously strong—far beyond the limits of ordinary humans.
"I'm a Level 3 high-class adventurer!" the man roared. "Know your place, brat!"
Wei Gong Shirou was beaten until his body was covered in wounds.
Only internal disputes among the Dark Faction prevented his immediate execution.
"This bastard killed one of ours! I'll chop him into pieces and feed him to the monsters!"
"Wait. He doesn't even have God's Grace, yet he killed a Level 1 adventurer. Talent like that is rare. Killing him outright would be a waste."
Their argument soon became meaningless.
A violent gust of wind tore through the stronghold.
A masked woman wielding a katana entered like a storm.
She slaughtered the Dark Faction members effortlessly. Compared to her, even children would have put up more resistance. The so-called Level 3 adventurer did not even have time to react before his head was severed.
Though injured by traps during the battle, the swordswoman pressed on, cutting down every last enemy. At the end, she approached the unconscious boy, hesitated, then lifted him onto her back.
"I was saved by her…"
Wei Gong returned to the present.
His slender arms confirmed the truth—he was still trapped in a child's body. Worse, there was no magic in his circuits. He could not sense mana at all, rendering his Projection Magecraft unusable.
He tried to sit up, only to collapse back onto the bed as pain surged through his body.
Bandages wrapped his abdomen. His left arm was broken, several ribs cracked, and countless smaller wounds covered him.
"My injuries should have been worse…"
A sharp itch spread through his arm.
His bones were healing unnaturally fast.
"Ah, you're awake. Thank goodness."
The door opened, and a young girl entered the room carrying a bucket of warm water.
"You are…?"
"Please don't rush to get up," she said gently. "Even with All-Purpose Medicine, injuries like yours take time to heal."
She had silver hair and matching eyes, her voice soft and soothing.
"My name is Syr. Syr Flova."
So she wasn't the swordswoman. She must have been the one who treated him.
"My name is Wei Gong. Wei Gong Shirou."
"That sounds like an Eastern name," Syr said with a smile. "May I call you Shirou-kun?"
"…That's fine."
His body might have been young, but his soul was not.
"You've been asleep for a whole day."
"A day…"
He had survived.
"And the woman who saved me?"
Syr wiped his face with a warm towel as she explained.
"This is the tavern where I work. I found you and an injured Elf girl collapsed in an alley and brought you both here."
"Is she alright?" Shirou asked immediately.
"She was badly hurt," Syr replied. "She hasn't woken up yet. Do you know her name?"
"I don't… She just saved me."
"I see. And do you remember where your home is?"
"…It's very far away," he said quietly. "No—there may not be a home for me in this world at all."
Syr fell silent.
The protagonist is Wei Gong Shirou from Miyu's world in Fate/kaleid liner Prisma☆Illya.
That world was already dying.
Trained in magecraft from a young age, he traveled the world alongside Kiritsugu Emiya, participating in countless acts of salvation. He was proficient in swordsmanship, archery, hand-to-hand combat, and firearms.
In Miyu's timeline, Shirou and Kiritsugu discovered the Divine Child, Miyu Sakatsuki—the embodiment of a wish-granting device. She became Shirou's little sister.
When forced to choose between saving the world and sacrificing her, Shirou rejected the path of the Hero of Justice.
He destroyed the Holy Grail War in a single night and wished for Miyu to be sent to another timeline—one where she could live happily.
"I'm sorry," Syr said softly. "I shouldn't have brought up painful memories."
"No, it's fine…" Shirou replied, unsure how to explain.
A deep voice interrupted them.
"So, the kid's awake?"
The woman who entered was tall and powerfully built, radiating overwhelming presence.
"Yes, Mama," Syr said. "This is Miya, the tavern owner."
For some reason, Shirou felt as though he were facing a legendary Heroic Spirit.
"Since we're short-handed, you're staying," Miya declared. "You'll work off your food, lodging, and medicine."
"Yes, ma'am."
Thus, Wei Gong Shirou remained at the tavern—and was tasked with caring for the injured Elf.
Her name was Ryu Léon.
As days passed, Shirou learned more about this world: Orario, the Dungeon, adventurers, gods, and Familias.
If a Level 3 was considered elite…
Then just how strong was Ryu Léon, who had killed one with a single strike?
"Thinking about kissing her awake, meow?"
A Cat Person girl appeared without warning.
"No, that's just a fairy tale," Shirou replied.
"Call Anya 'senior,' meow!"
The tavern remained lively as ever.
And so began the next chapter of Wei Gong Shirou's story.