@Sasukerinnegan This is crazy, you pretty much convinced me . Now you sparked this I see Renarin reactions while Wit was mocking him(her) suspicious. Wit even says there were actually three sisters? knowing Wit I am not sure he is just teasing or slips in a suggestion.
I am not taking it seriously now,you cant just base it on "Renarin READ".
if this was the case then why would he/she risk things further by learning how to read? Wouldn't be that suspicious. Well one can argue it was Shshsh who taught how to read but we dont have much facts build this thing up,but man you are brave