Compare Demon Slayer 5"Action Figure - Zenitsu Agatsuma

He joins the Demon Slayer Corps at the same time as Tanjiro. He has an acute sense of hearing, and can identify the sounds made by other people or demons. Zenitsu has zero confidence in himself and often talks self-deprecatingly. However, when he is scared to death, he falls asleep and his personality changes to a sharp-minded person.