【Multiple female protagonists】+【Fan fiction】+【System】+【Daily life】

The hero comes to the world of science and starts a new experience of solving cases, and takes care of the girls he likes by the way. Of course, it is basically the same as the original plot. Because I am not very good at reasoning, I don’t know how to write the case.

My name is Yotsuba Mahiro, a time traveler.

Sent to the Demonic World by an alternate-world teleportation ambassador, I became a Adjustment-Type magician of the Yotsuba clan.

Besides being born with eyes capable of replicating all forms of magic and physical techniques, perhaps my greatest supporter is my cheap mother, Yotsuba Maya.

After fifteen years in the gloomy Fourth Research Institute, my cheap mother suddenly gave him a crucial task.

"Although you're a Adjustment-Type magician of the Fourth Research Institute, you're also my child."

"So, it's also your duty to produce a worthy heir to the Yotsuba family."

It's just about carrying on the family line, a simple matter. Is the bloodline of the Ten Master Clans and the Hundred Houses enough? What if

I add your sister Miya? What if

I add the lolita from the Black Bullet world?

What if I add the assassination group from the Zelda: The Sisterhood?

What if I add a singing diva from Guilty Crown?

...

After traveling through ten worlds, he asked Maya again.

"Is that enough now? If not, I can add more!"

Mahouka (Temporary Absence) - Black Bullet - Return to Mahouka (In Progress) -

Volume 1: The Beginning of Mahouka

Volume 2: Black Bullet

Volume 3: Return to Mahouka

“Right or wrong, I no longer have the strength to explain. If you have anything to say, go talk to my holy sword.

My name is Xiling, a hero. Ever since I pulled out the holy sword, I officially joined the chat group.”

Kevin: “I’m fighting my future self? Is that for real? Will I win?”

Faded One (Tarnished): “Magic is also strength. I became king through magic—why wouldn’t that count?”

Remuan: “This is way more fun than a gun!”

Luo Tianyi: “I think I’ve time-traveled to an ancient world!”

Horaiji Kyusho: “I will lift the curtain of salvation and embark on the path of the savior.”

Erena: “…Can I leave the group? I feel like I don’t fit in with you all.”

In this story, you will see:

About me time-traveling 50,000 years into the future and picking up a cat

Kevin vs. Kevin

The Blade of Supreme Will

Something’s off about this ancient world

Becoming the martial champion in ancient times

The final battle against the Will of Collapse

Remuan piloting a mech

Encountering Hatsune Miku while playing in a band, strong as a monster, unbeatable

Elysia looking for someone

Fang Yi travels through a world where all the characters merge. With no one to turn to, he constantly searches for ways to survive in this new world.

It's at this moment that he discovers that this seemingly normal world is actually a bug-ridden world of all the characters. Inhabited by a monster called the "Predator."

Can it prey on character settings? Or even take them for itself?

After defeating the "Predator," Fang Yi discovers that he can recycle the preyed settings, fixing the bugs in this world.

He can even gain one of the settings he preyed on!

Bad news: Oops! This boss seems a bit tough to defeat!

Good news: My cheat code seems to be quite buggy too!

What era is this? Still using traditional magical instruments? Peach wood swords and talismans are outdated. We need firearms! The compassionate Gatling Bodhisattva, the AK Immortal will stroke your head, the Glock Buddha will crack your skull. Of course, if you don't like being killed by firearms, you can also choose to be killed by thunder magic. I also know a little about magic.

What? You're talking about human rights? You're a demon, how can you talk about human rights?

I just use firearms for fun. You don't really think I don't know magic, do you?

Jiang Chen travels to the end of the Saint Seiya SS era, where the Holy Wars have concluded and Hades has perished. Has he inherited all that Hades possesses, along with the unopened Queen of the Underworld?

Activating the dimensional galaxy map, he journeys through the heavens and myriad realms.

The heroines of [God Slayer] slay gods and form a new generation of Hades Saints. The Witches of Sin in [Re] master the Perfect Sin. [Teyvat] awakens the Four Supreme Pillars and gathers the essence of the demon gods.

[Type-Moon] tames the Beast of Original Sin and assembles a force of Heroic Spirits. [Date] reverses the Kabbalah Tree of Life. [Zero] transforms the Flügel into Fallen Angels.

From the heavens and myriad realms, from the Kingdom of Gods to the Pantheon, a pantheon of gods is formed, and a true Hell spanning dimensions is born.

[Ice Fruit] + [Kamiu] + [Zanpakuto] + [Ten-Tails]

Traveled to the world of Inuyasha, Home

​ and drew Zanpakuto, Eternal Mangekyō Sharingan, Thunder Fruit, etc.

Became stronger all the way and unified the world.

In the process, he also made up for his regrets, Inu no Taisho, Kikyo, Kagura, Kanna…

Traveling through the world of pirates, he replaced Luffy who was not yet born, and gained a gift of incomprehension that defied

the heavens. Since then, Luffy has created all kinds of incomprehension abilities.

"Your incomprehension is incomprehensible. Through visualization and understanding, you have comprehended the exclusive skill - Eight Gates of Ninjutsu."

"Your incomprehension is incomprehensible. Through visualization and understanding, you have comprehended - Conqueror's Haki - Entanglement."

"Your incomprehension is incomprehensible. Through personal visualization and understanding, your transmitter has comprehended the exclusive skill - Top Buddha."

"Your incomprehension is incomprehensible. Through meditation and understanding, you have comprehended the special combination skill - Fifth Gear - Nikayake."

...

In the war on the top, Luffy led the brand new Straw Hat Pirates to participate in the war collectively.

Nikayake Luffy, Ghost Nine Swords Style Zoro, Demonic Wind Leg Sanji, Top Buddha Robin...

When the Straw Hat Pirates appeared, the whole world was shocked...

Nangong Nayue: I can't have more children. This is already the tenth one.

Eriri: Why do I want ten children too?

Himeko: What a rebellious son!

Mio's mother: Treason!

Yuyuko: Child, what else do you want? Your mother will tie it up for you.

Kasugano Sora: I want it too, I want it too...

Sagiri: I will draw you erotic pictures tonight.

Alicia: Honey, the children are so cute. I want one too. Can you help me?

Clara: No, no... No.

Grayshu: Brother Chuye, I want more colors. Can you choose them for me?

Yukinoshita Yukino: Don't do this! I'm still a child!

Kasumigaoka Utaha: I hate you so much!

Nangong Chuye looked at the colorful girls in the kingdom of God. He just wanted to say that everything was the choice of fate. It was not my fault! I was just following human instincts! Really! You have to believe me!

The girls: Go to hell! You dead pervert! Lolita control!

As a PhD in economics, the otaku traveled to a completely unfamiliar anime world and became a nobleman who had run away from home for a long time. He activated the system and awakened the martial arts body. In the midst of fear, Liu Yuntian's life became colorful.

(The anime that are currently confirmed are "Kaguya-sama: Love is War", "We Can't Study Together", "Gabriel's Fall", "The Quintessential Quintuplets", "Food Wars! Shokugeki no Soma", and "High School DxD". Other anime will be added later!

)...