After parting ways with his soulmate Sacchan, Sensei is left heartbroken and bereft of purpose. The gloomy, suicidal adventurer soon wanders alone into the frightening trials of the Fairy Queen. Only one other person has successfully completed those trials - but Sensei has a unique gift for surviving what would kill anyone else. A whole new continent waits beyond, where a kingdom that seems perfect from the outside hides secret trouble beneath the surface...