In the fight between Zenitsu and Kaigaku, Zenitsu manages to beat kaigaku. But what if Kaigaku had 1 year to master his demon form. Let's find out.

Every shonen anime has that one side character that provides comedic relief, yet remains pivotal to the story. In Demon Slayer's case, Zenitsu Agatsuma is that character, a lovable crybaby who fears ...