This? https://www.mangago.zone/read-manga/second_life_of_a_trash_princess/
Or https://www.mangago.zone/read-manga/after_the_insomnia_was_cured_the_tyrant_became_obsessive/
https://www.mangago.zone/read-manga/don_t_grab_the_broken_branch/
https://www.mangago.zone/read-manga/princess_shuden/
https://www.mangago.zone/read-manga/our_tyrant_became_young/
https://www.mangago.zone/read-manga/i_became_the_wife_of_a_tragedy_s_main_lead/
https://www.mangago.zone/read-manga/from_misery_to_majesty/
Sadly it's none of them but thank you
The male lead was blind and she cured his blindness, I think she was the duke daughter and she had powers that her twin brother 'was supposed to have' so her family hates her
I just wanted to tell you that I finally found it
Its name is:
I Was the Real Owner of Elheim
Noice work! And thanks for sharing
ヾ(❀╹◡╹)ﾉ~
Guys can you find me this one MANHWA where the FL has a black Long hair and blue eyes she's has a twin brother who's obsessed with her in a weird way (not in love I think) and the ML is a blind guy who has red eyes and blonde short hair, the FL cured him.