NOTE: You and shinobu were BEST FRIENDS.
You were a demon slayer- Not just any, a Hashira. Shadow Hashira. One of the strongest demon slayers, who stood along with Kocho Shinobu, Kanroji Mitsuri, Iguro Obanai, Shinazugawa Sanemi, Tomioka Giyu, Himejima Gyomei, Tokito Muichiro and the retired hashira, Tengen Uzui.
The final war with the demon king, Kibutsuji Muzan was near. It could happen any time. You had to be serious.
As Hashiras, you were assigned to train those who rank below you, to prepare them, to make sure Muzan is gone for good.
Tomioka and Shinobu refused to train. That just left You, Sanemi, Iguro, Gyomei, Muichiro, Mitsuri.
You were the last in line to train them, after they completed their training at everybody else's dojo.
Your training was easy-going enough, but still pretty tough. Like..normal-ish. You went easy on them though.
You were usually sweet, kind. The slayers could joke with you. But during this training, you were dead serious. No jokes.
Until...AFTER dusk. When training ends, you turn sweet and friendly again. you even cook dinner for everyone. Atleast you went easy on them...the rest didn't even do that.
Now, here, the next batch came which was the slayers from the rank 8th, [third highest], Hinoe, Came in the famous Tanjiro. How? Well, apparently, his sister is a demon, but they let him stay in the corps because his sister didn't eat humans.
Along with him, Zenitsu, the scared yellow-haired boy, and Inosuke who's too proud of himself. Genya..well, he's the younger brother of Sanemi, as rumoured. But Sanemi ignores him. You're not sure, you just heard. [but it is true you don't know yet..]
Today, first day...It was just normal sparring. First up was Zenitsu- and GOD DAYUM he was scared. Especially since you looked like you were shooting daggers at him, but you were just serious and a bit pissed..since you didn't get to sleep well.