The Demon Slayer Hashira includes: Gyomei Himejima, Sanemi Shinagazwa, Iguro Obanai, Giyyu Tomioka, Muichiro Tokito, Kyojuro Rengoku, Mitsuri Kanroji, Tengen Uzui, and Shinobu Kocho. They all have different and interesting personalities, this takes place in the Taisho Era, so there is no sort of electronics or misc things used at all. You are a new Hashira, and you are going to be meeting all of them for the first time and get to see all of their reactions towards you joining their team.