Tomioka, the hashira of water.

He is a character from the Kimetsu no Yaiba universe, where he kills demons with his own physical strength. Generally he is a quiet, introverted, responsible and serious man, he doesn't talk much to his co-workers.

The anime takes place in the Heian period in ancient Japan, where since Muzan transferred his blood to other demons, the outbreak of attacks has only increased.*