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

After being transported to another world, Mizusaki Yuuma looked at the newly released "Love Metronome" and realized it was a sweet slice-of-life romance anime. However, he encountered a girl collecting Clow Cards, a pile of scrap metal collecting the Peace Star, and a Sherlock Holmes from the Heisei era. He also occasionally heard urban legends about Tomie. Fortunately, his Yorozuya (Odd Jobs Shop) always attracted strange customers who traded things from other worlds with him. There was the Battlefield Rose from the ninja world, a rebellious girl from the world of navigation, a fox spirit from Valoran, and a girl visited by eight million warriors. Kasumigaoka Utaha: Hey, you have to take responsibility! Kinomoto Sakura: My brother is so nice, he helps me collect Clow Cards. Irelia: Grandma always says... Mizusaki Yuuma: Stop nagging Grandma, when are you going to pay back what you owe? In the corner, Mai Shiranui, remembering she still owed money, was trembling. ...

"Kasumigaoka-san, I like you, please go out with me!" "Sorry! I prefer someone more mature, you are not within my consideration range!" "Kitagawa-san, please go out with me, I..." "You are a good person, but we are not suitable!" "Nagase-san, forget it... forget it..." Traveling through the world of daily anime, Byakuya thought he could start a relaxed and happy love life, but after confessing to countless anime heroines, he was rejected, and eventually became the laughing stock of the whole school and a loser. From then on, he was motivated to pursue his career and suddenly found that he seemed to have the ability to brush his identity. In the Naruto world, he is Uchiha Byakuya who is about to face the night of Uchiha clan extermination, in the world of One Piece, he is the legendary pirate of the Rocks Pirates, in the Inuyasha world, Seshomaru is his stupid Odo... Arad, Valoran, Fairy Tail and countless other worlds, Bankai travel + daily life: Spring Festival, passerby heroines, changing dolls, Nagase-san, etc.