The world of Eclair, once ravaged by wars between humans, beastfolk, and demons. A man was summoned to save this world, and he fulfilled his mission, returning to the Human Kingdom. However, what awaited him was a trap set by the King of the Human Kingdom, who feared the hero's power, capable of usurping his own position. Imprisoned and subjected to a return magic, the hero was reborn as a baby in the modern world.

Sixteen years later—he was living his high school life as Yuki Susaki. Even when bullied as a gloomy bookworm, always reading and searching for a way to return to the other world, he relentlessly continued his quest.

However, he suddenly found himself treading the soil of the other world once again. It was, unexpectedly, due to the Human Kingdom's hero summoning... this time, alongside his classmates.

“Another war? What a pain, I’m out of here.”

Fortunately, he was summoned to the other world five years after the events of his first summoning. He decides to escape the Human Kingdom and go meet his old acquaintances, such as the Demon Lord and the Beast King—

However, he somehow keeps getting embroiled in various troubles—the story of a subtly unmotivated former hero.

**A book adaptation has been decided.**

The main story is complete.

A comic adaptation is currently available on Niconico Seiga (Manga)! Please be sure to check it out!