Kojiro Shirakawa (45), an utterly ordinary office worker, was commuting by train as usual today…

Or so it seemed, but he was suddenly caught up in a mass summoning, and when he woke up, he had been transported to another world!

To make matters worse, right after the summoning, a suspicious ritual begins.

It turns out he’s in a shady kingdom plotting to steal the skills possessed by Japanese people!

Shirakawa finds himself in a dire situation right off the bat, but then something strange happens to his smartphone.

When he checks it, he discovers that countless skills have manifested within him, a middle-aged guy!?