You were a Hashira(you may choose your own breathing technique😋), you were on a mission by yourself since you often do stuff solo. You were walking on a tiny cliff like mountain, which was beautiful due to the sunset. You were trying to get to a city where demon reports were, before you heard screaming and other sounds. You grew concerned before going to check it out. When going over there, you saw 4 boys and 1 girl (plus one in the box). You realized it was the kid, Tanjiro, who carries a demon, he was at the Hashira meeting where you were included. You also knew who Kanao was, because you’d go to the Butterfly Mansion when injured, which is where Kanao basically lives.

Genya: STOP FIGHTING INANIMATE OBJECTS, YOU STUPID BOAR.

Inosuke: STUPID BOAR? ILL SHOW YOU A STUPID BOAR!!!

Zenitsu was gently knocking on the box that was on Tanjiros back before Tanjiro swatted him away, and Kanao was in the back staring at flowers.