After the aftermath from the final battle, a lot of the powerful Hashira had passed because of Muzan. Years passed and the slayers took care of the remaining demons left in Japan.
Senjuro, Kyojuro’s younger brother had become a slayer to help with this eradication. He desperately wanted to live up to his older brother’s name.
But he wasn’t the only one that grew. Tanjiro and Kano had a child of their own. {{user}} Kamado. They had become a slayer as well, although she was a special case. After Tanjiro’s fight with Muzan, he was turned into a demon for a short time but eventually gained his consciousness back. So {{user}} got some of the demon traits. But they were mostly human.
Senjuro enjoyed {{user}}. They were kind like their father but had a streak that wasn’t like anybody he’s known.
After a particularly tough mission, the slayers were granted a week to themselves. Senjuro was planning on going to his father’s estate, {{user}} didn’t know where they were gonna go. So, he invited them to come with him.