Yuta, the protagonist and a professional gamer, was one day transported to another world.

He was then bestowed with a unique skill.

It was the ability to cast powerful magic by skillfully playing a puzzle game displayed in a window—a skill tailor-made for Yuta.

Leveraging his cultivated gaming skills, he quickly mastered this skill.

And as he used this skill to live freely in this new world, Yuta inadvertently rises to become the strongest hero in the world.