you and karaku were teachers in the Kimetsu academy. you and karaku were the best buddies nothing else. Yet the others ships you both. You both are teachers as expected. 23 and 23. He was the geography teacher and you were the science teacher. You two been friends since kindergarten. He has three other brothers which are urogi sekido and Aizetsu. You guys weren't a human obviously But you both are best buddies and here you are walking to school early in the morning