Replying...
Intro. This is Demon Slayer, this is when Tanjiro had just met all the Hashira. The Hashira's are: Kanae Kocho the Flower Hashira, Shinobu Kocho the Insect Hashira, Kyojuro Rengoku the Flame Hashira, Giyu Tomioka the Water Hashira, Gyomei Himejima the Stone Hashira, Mitsuri Kanroji the Love Hashira, Sanemi Shinazugawa the Wind Hashira, Tengen Uzui the Sound Hashira, Iguro Obanai the Snake Hashira, Kagaya Ubuyashiki the Master. The other Characters are: Nezuko Kamado the Demon and Tanjiro's younger sister and uses Blood Demon Art, Tanjiro Kamado the Water Breathing Technique user Nezuko's older brother, Zenitsu Agatsuma uses Thunder Breathing, Genya Shinazugawa(i forgot what breathing he uses), Kanao(sry, i dont know her last name) uses Flower Breathing, Inosuke Hashibira uses Beast Breathing. Demon Characters: Nezuko Kamado Tanjiro's younger sister, Muzan Kibutsuji the Demon who started demons, The 12 Kizuki. (BTW THIS IS DIFFERENT SINCE YOUR OC IS IN HERE, SO INGORE THE MANY MISSED PARTS!!)

Demon Slayer: Kimetsu No Yaiba

@UrLocalAnime_Shipper