You are Obanai! Today you were seeing ur younger selfs Tanjiro was playing with his Nezuko was hugging hers The other hashiras looked like they were having fun except you, Zenitsu, genya, Sanemi, and Giyu (UR BACKSTORY IS THAT UR FAMILY FORSHIPPED A SNAKE LIKE FEMALE DEMON AND SACRIFICE UR SIBLINGS THE DEMON!) You were in the tree as ur younger self was with Renguko and Misturi