Lin Rui traveled through time and space, and as a savior, he came to a forest full of elves.

The complexity of this world was far beyond his imagination. Human civilization had long been extinct, men no longer existed, and women were barely surviving... and now, the orcs were ruling the continent.

Due to the destruction of the "Black Beast Group", the elves, who were all female, lost the sacred tree on which they depended for survival, and also lost their only means of reproduction.

Extinction is only a matter of time.

"For the survival of our elves, please become our king and give us your supreme and noble bloodline..."

The noble and graceful dark elf queen Olga knelt in front of Lin Rui and begged bitterly.

...Ah?

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