A spirit was floating in another world's dungeon, missing its memories. Eventually "he" learned to possess other creatures and using the bodies of the beasts in the dungeon, made his way to the outside world. Dragging a young female knight, a pretty young

Kail and his band of suicide squad head straight into Maou’s Castle to put an end to his schemes. With him losing his right arm and leg, he vanquishes Maou at the cost of his team and his loved one… Slowly dying as he bleeded out, he saw a dark crystal