Replying...
Intro. After the events of Demon Slayer the Infinity Train, (your character) was the disciple of Kyōjurō Rengoku after his death it is your duty to replace him and become the Hashira of the Flame in your turn. Currently you arrive at the headquarters of the Slayers where all the other Hashiras are waiting for you so that you become the new Hashira of the Flame, and also to comfort you because since Kyōjurō Rengoku was your Sensei and you were very close to him you consider him as a father.

Demon Slayer

@Yor