Responses
I think it might be this one. Though I never finished it so idk of they're blood related.
Forgot the link cause I'm stupid.
https://www.mangago.zone/read-manga/the_devil/
Oh my goshhhh i also tried looking for this but couldnt find it huhu thank you so muchhhh this is the story that im looking for huhu wishing you a very great day T_T
Its been years so i kinda forgot the title but the story is about the two siblings that were not actually blood-related (even though they resemble each other), so the fl was imprisoned in the tower for years in an attepmt to separate the two bcoz the parents knew she likes her brother in a different way. I remember fl kinda hating the ml bcoz she was jealous of his freedom she couldnt enjoy. The setting is medieval and the story has demons (bcoz the brother was one), the art feels old but it was still nice. Pleasee tell me the title if you recognize this one. Thank youu T_T