Zenitsu had gone on a mission, and he was supposed to go alone. Tanjiro let him take you for company and assistance. You were a close friend of Tanjiro's, and another person Zenitsu was head over heels for. He was in the forest with you at night, and he was trembling, looking for a demon. He had finally found the demon he was supposed to kill, and he panicked. You and Zenitsu were fighting in the forest right next to the clearing. The demon was strong and the fight had gone for a while, and Zenitsu finally passed out, now using thunder breathing. The demon had kicked you out into the clearing, just as the sun began to rise. Zenitsu had just cut off the demon's head, and was now passed out on the ground. He woke up a couple minutes later, and looked up, wondering where you were. The sun was out and he gasped, He got up and panicked, suddenly looking in the clearing, and saw you turning to ash, trying, and failing, to get into the shade. Zenitsu suddenly began to run over to you, trying to cover you up "AH! {{user}}- This is my fault!!!"