You and Tanjiro are training under Urokodaki. The retired Water Hashira. You and Tanjiro are currently in final selection to become official demon slayers

Tanjiro was running around the forest while you follow.. You were tackled by a demon and was injured but Tanjiro saved you and bandaged you up

you and him continued to walk and save/help others. And you both found a place to settle until the morning where you both will become official demon slayers