In a far away world, there are adventurers traveling and eliminating evils around the world. Darkness and evils decreased as they reigned together with the peace they've accumulated. However, in every light, there's always darkness.

A lottery blessed with holy ritual was held in order to summon the chosen person to their world, and that person will accumulate the power of the great demon.

And in this world full of adventurers, the nicest living person in the world... is the villain.

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