Lin En, seemingly an ordinary Chinese language teacher at Sobu High School, harbors a secret. He's the sole occupant of the "Ten Thousand Worlds Safe House"! His "classroom" connects the world's most elite "problematic beauties"! At the outset, the safe house "picks up" a young girl who's recently lost her sister and is filled with hatred. Faced with her murderous intent, Lin En gives her a single assignment: "Go back and face your anger!" As Shinobu Kocho unleashes bloodshed across the Demon Slayer world with this "assignment," Lin En uses his first reward, "Emotion Perception," to precisely tap into Yukino Yukinoshita's loneliness! → Homura Akemi: From "Desperate Girl of Reincarnation" to "Demon God Who Controls Time and Causation," rewriting fate and subverting the universe! → Misaka Mikoto: From "Sinful Princess of Electricity" to "Thunder Empress on the Path to Absolute Power," piercing the divine realm with lightning and reshaping the order of Academy City! Of course, there's also the occasional everyday pretty girl... This world is truly wonderful, but sometimes it's just too much...

【Fate fanfiction, Charlemagne as male lead, includes original characters and settings—if that’s not your thing, please avoid reading】

The author is extremely amateur, the plot isn’t particularly tight, and the romance is kind of awkward.

If this causes you a bad reading experience, I can only apologize—

I’m truly sorry! bows repeatedly

———Now for the serious synopsis————

As an ordinary person, Fujika Tsukizuki suddenly found a Command Seal appearing on the back of her hand, marking her as a Master chosen by the Holy Grail.

With a “might as well try” attitude, she half-casually and half-seriously aimed to summon her all-time favorite Servant—

and somehow, she actually succeeded.

“Wait… could I actually be a genius at magecraft?”

“But hold on… who in the world summons a Servant using merchandise?!”

Having traveled through time and space, I've gained the ultimate Heroic Spirit Avatar Legion System. The future of sweeping the world with an endless army of clones is just around the corner!

But... why are there only female Heroic Spirits?

...

"Can you tell me how you managed to find so many loyal and beautiful wives?" Fujimaru Ritsuka asked, stunned.

"It's mainly because... we're all connected."

Surrounded by beautiful women, Bree looked away awkwardly.

(Note to those in the audience: The male protagonist can transform into various female Heroic Spirits and use Heroic Spirits as clones.)

Morpheus, who had traveled to the world of "A Certain Magical Index," was still sorting out the mess left by an evil magic society when he was caught in a space-time turbulence and transported to the world of Type-Moon. He was reborn as a baby, adopted by the Macremis family, and Bazette's younger brother. As he prepared to fight the Fifth Holy Grail War, he discovered that this world was actually the FGO world, where the Fifth War had never existed. So, for the sake of world peace and to once again pursue the ultimate secrets of magic and become a demon god, Morpheus Fraga Macremis, a golden-type magician, embarked on a journey to save humanity.

The Type-Moon World is a unique parallel world.

In this world, there are Heroic Spirits, vampires, gods, and all kinds of supernatural beings.

There are conspiracies, schemes, factional struggles, and even the descent of Outer Gods!

There’s Saber’s Excalibur!

There’s Rider’s Bridle of Chivalry!

There’s Illya’s lively charm!

There’s Matou Sakura’s ultimate redemption!

There’s Tohsaka Rin’s tsundere pride!

There’s Medea’s transformation!

There’s Cú Chulainn’s Luck E!

There’s Sun Wukong, Wu Zetian, Qin Shi Huang, Shuten Dōji, Yu Meiren, and… so much more!

Du Wei traveled to the world of Kamen Rider Saber and was chosen as the guardian by the Book

of Omniscience and Omnipotence! But the story has not yet begun.

Du Wei saw the mercury snake that repeats reincarnation.

"Can you bring me the unknown?"

Mercury, who seeks the unknown, grants the snake a favor.

Rebuilding the Saber Driver and the Domination Sword based on the eternal destruction opens a new chapter for the story!

Bawanxi: "Bring me more sorrow, dear~!" Morgan

: "It turns out that you are what I lack in my rule. In order to not fail again this time, I will make a law that has both ambition and you." Melusin:

"You are the star I look up to, and the meaning of my existence is to be used by you."

The world that he traveled to for the second time is the British Lostbelt of Type-Moon!

Du Wei is a Kamen Rider who carries the principle of eternal destruction.

Exercise the principle of hegemony and achieve the supreme position of God.

"Because glory lies far away!"

On the Magic Eye Collection Train, the Rain Witch smiled with satisfaction as she watched El-Melloi II display the might of the king's army in front of Hephaestion.

"Broken down~"

In the world of Artificial Girl + Rozen Maiden, the fairy tale witch hugged the mercury lamp and hummed briskly with light steps.

"This is a friendly vampire."

In the world of Bloodthirsty Assault, looking at Nangong Nayue with a wary face, Elquet smiled and waved.

"Seven dragons, turn into my fingers!"

In the world of Problem Child, Draco (Beast Nero) rushed towards the high sun with a grin.

...

Since you are here, come in and take a look

[Day 1 of the time travel: Wearing Adi King's battle suit and dark red hair, is Emiya Shirou actually me?]

[Day 3: Confirmed, this isn't the UBW questline, no Red A experience packs, so I'll have to rely on myself to master Unlimited Bladework.]

[Day 20: Strengthened my magic proficiency and began practicing Projection. During this time, I met an alchemist who asked me where I got all these alchemical weapons made from recycled metal.]

What the hell is recycled metal?

[Day 90: Finally mastered my first Noble Phantasm, Projection. They exclaimed, "This is the Seven Kingdoms," an outstanding achievement in alchemy."]

Huh? I don't really understand you alchemists.

...

[Day xxx: Huh, I finally mastered Unlimited Bladework! Their expressions were fascinating, and they asked where the Nibelungen was.]

How come you don't even know about the inherent barrier? Isn't this... Type-Moon!?

Kagerin, who traveled to Type-Moon, had a fantastic start with a 9.3 rating, but his fate was shattered when he encountered Kukulkan in Fuyuki City. "Is this still the Fifth War? We've already reached the Lostbelt." Fortunately, the cheat code arrived. [Travel to a certain era, and your actions will be settled based on your actions.] [Warm reminder: I don't have any talents.] "Without any talents, trying to build a good board just forces me to go the popular unofficial history route!" "Wait, I think I understand." [How did the spirited young Minamoto no Raikou become the shogunate's sole shogun?] [The millions of monsters led by Ibuki-douji and Shuten-douji were no match for you alone. You must have sold them out...] [The incarnation of Izanami walks the world, why does he have a special liking for you?] ... [King Arthur's secret as a woman is revealed.] [Morgan's confidence explodes, and Britain is divided.] [You prioritize the greater good and reconcile the sisters. [You saved Britain, but Morgan and Altria fell into civil strife because of your beauty and wisdom.] ...To prevent the world from being destroyed, to protect world peace, and for the greater good, Yinglin can only feed the demon with his body (don't worry about being tortured by a woman and turned into a ⭐⭐). "Don't be afraid, children, the male god is here."