ClaDun Sengoku is set in a world called “Arcanus Cella,” where the protagonist (the player) awakens and the story begins.

From where the protagonist awakens, you meet a mysterious character named "Yukimura," and from him learn that "Arcanus Cella" is the world of the dead, and in order to escape this world, you must fulfill the dead's "regrets."

The protagonist is pressed by Yukimura to release the souls that wander the area by heading out to dungeons that hold clues to their regrets.

The protagonist will safely find the clues of their regrets and return from the dungeons. However, the souls wandering about will not be released. On the contrary, they will return to the form they had while living... the form of a military commander.

Search for the reason why the souls can not be reincarnated, and take on dungeons in order to be reincarnated yourself.