"Even capybaras sprint away from me."

Aihara Kaito is a high school student who, ever since he can remember, has possessed a peculiar disposition that causes animals to dislike him.

One day, while walking home from school, as usual being avoided and sometimes barked at by animals, he happens to encounter his classmate, Shishihara Chisato, and finds himself caught up in her summoning to another world.

During the summoning, he was inexplicably repelled from the magic circle, and the next thing he knew, he woke up in an unfamiliar ruin.

As he was lost and bewildered, unable to comprehend the situation he was in, something in the form of a black cat appeared before him.

Familiar, Hero, Demon Lord.

This is an adventure story that begins with a contract formed with a monster he meets in the world he was pulled into.

"Why am I, the master's servant, the one fighting!?"

"Kaito, it's because you're stronger that way!!"

The more companions he gains, the stronger he becomes.

This physical-type tamer races through the other world as an adventurer.

Updated Monday through Friday, five days a week, starting at 6 PM.

A book adaptation has been decided by MF Books.

Volume 1 of the book was released on November 25, 2019.

A comic adaptation has been decided by Takeshobo.

Serialization began on 'WEB Comic Gamma+' from March 26, 2021.