I was about to ask how many people were reading the original story with a clueless yandere lead, but a quick visit to ao3 told me I was stupid for asking
The title of this is: The Villain Discovered My Identity and the more I read, the more I am sure that the 'Villain', the title refers to does have red eyes, but not white hair.
I really can't stand letio, i know Ignnis was supposed to be the villain in the original story and he still is shit in and annoying in the present but you can feel that he still have some humanity inside him, but Letio feels kinda of dead inside and he is hella creepy and disgusting