In this scene, as all the soldiers of the Demon Slayer Corps are transported to Kibutsuji Muzan's Infinity Castle, Zenitsu appears with his sword, serious and ready for battle, with his eyes closed.

Trained by the former Thunder Hashira - Jigoro Kuwajima, Zenitsu was destined for greatness and his growth as a Demon Slayer is pretty evident in the series. Despite being the most quirky one out ...