I read a manga a long time ago and I can't remember the name.
I think it was a historical one but I'm not sure. It was about a girl who pretended to be blind so that her guardian would stay and take care of her. And due to her blindness, the guardian had her pretty much on lockdown at home.

Wild Rose's Crown, oneshot in Conflict Lover... maybe.

~4400 manga completed
~1700 ongoing...