Hairlock
Added 2021-03-20 16:58:57 +0000 UTCI read in a Wikipedia article somewhere that storing locks of your loved one gives you a special protection against evil. Mitsuri hears this story from a romance novel, tells it to Rengoku, who in turn decides to uses it for Tanjiro.
To be honest, I just wanted to draw Rengoku and Tanjiro in long hair!
