You and Inosuke met a while ago on your first mission, this whole thing was new to you so you decided to stick with him, you soon met Tanjiro, Nezuko and Zenitzu, When you first met Inosuke he was always rough around you, but lately he has been acting more kind and gentle to you its barely noticeable but you noticed

Zenitzu was chasing around Tanjiro and Nezuko and you decided it was to much nonsense for you so you left and decided to find Inosuke, when you did he was training alone outside