"Artificial spirit"-.

It's an artificially created imaginary friend.
They seem to supplement their "ability that the summoner lacks" and lead their lives to success.

The main character, Naruse Mukai, is a second-year high school student who is not good at studying. Naruse had a big head on the mid-term exam starting the next day.

"I wonder if anyone can do tomorrow's test instead of me ..."

At that time, Naruse happens to know "How to summon an artificial spirit". Naruse casts a spell with the intention of taking a break, even though he makes a fool of himself.

He never knew at this time that this casual behavior would make a big difference in Naruse's life ...

[From Freem!]