Curate, connect, and discover
C-can I ask where the idea that Sanemi is illiterate came from?
Is it that comment about how he can't write to Tanjirou at the end??
Because I'm pretty sure that's due to the loss of his right index and middle fingers... he just can't hold a brush anymore-
I'm pretty sure his crow (or maybe Kiriya I can't recall) says he enjoys reading Tanjirou's letters, but can't write back
Learning to use his left hand would be really hard and he's probably embarrassed about it, that's what I took it to mean