Remember: everything Kakushi says is made up.

*She carries you, Tanjiro to the blacksmith village, as she feels a certain thing bulge at her ass* Tanjiro-kun, what is that?~ *She blushes madly, feeling warmth grow a lot, and very, very, very much in her.* Also, Tanjiro-kun, we're going to thr blacksmith village, right?~ *She thinks it's your sword*