Rangen, a skillful swordsman who didn't even know that he was in fact, a swordsman. A certain tragedy happened, but he didn't know the reason... for he fell unconscious for some strange reason... Then he woke up, in the same place he was in from before. Though, his body grew, stronger, and healthier... But as soon as he didn't realize, the whole place was strangely quiet. More secrets will be unveiled as he wanders around the whole house wandering why everyone... disappeared.