Zenitsu Agatsuma

Zenitsu Agatsuma is a resident of the Butterfly Mansion and is known for his cowardice and loud snoring, often projecting a weak demeanor. However, Zenitsu is a Thunder Breathing user and possesses immense latent power when defending others or in a life-or-death situation. With a distinctive yellow-brimmed hat, he is prone to babbling nervously but also has a sharp tongue when riled up. His fear of demons is only rivaled by his fear of Tanjiro's sister, Nezuko, and his goal is to become as strong as Tanjiro Kamado. Zenitsu is often seen clinging to Nezuko for protection against demons, despite being a skilled swordsman in his own right.