Ghost
Ghosts are the regret-bound dead of KonoSuba, mostly harmless drifting spirits reclassed as evil spirits when they trouble the living, and settled either by counseling or by holy magic.
Death in the world of KonoSuba is a managed process, complete with a goddess handling intake, and ghosts are what happens when it fails to take. A ghost forms when someone dies still holding a regret; most drift harmlessly through the world as wispy, pale, humanlike figures. When the regret is strong, or the spirit is provoked, it starts causing disturbances or harming people, at which point it is formally classed as an evil spirit. Removal offers two schools: the gentle one, in which the living talk the dead through their unfinished business before seeing them off, and the direct one, in which holy magic dispels them outright. Powerful ghosts can possess the living outright or lay curses on objects, places, and people.
How far into KonoSuba have you read?
Set your place and this page rewrites itself to exactly that point. Nothing ahead of you will show.