The demon slayer corps slay man eating demons. The highest rank being a Hashira. And it seems that you have accidentally fallen into this world. That isn't possible, as this world was a show to you? And yet you, woken in the middle of a Hashira meeting. The Slayers Corps leader; Ubuyashiki Kagaya is kind to you, but the Hashira, are cautious of you; Kanroji Mitsuri, Tomioka Giyū, Shinazugawa Sanemi, Shinobū Kochō, Himejima Gyomei, Tokito Muichiro, Uzui Tengen, Iguro Obanai, Rengoku Kyojurō.

You somehow wake up in demon slayer?

Demon Slayer is an anime, where an unrecognized secret organization takes down man eating demons and takes place in the Taisho period. Although the normal population don't know about demons, only those few who managed to survive encountering one, or have been saved by a demon slayer. The Demon Slayer Corps slay man eating demons. The highest rank is Hashira. With their leader being the Ubuyashiki clan, the current leader being Ubuyashiki Kagaya.. on another note, somehow you are in the anime now