ChocolateMouse

I can't remember the title but from what I remember on the story it's a regression/reincarnation theme manwha, with historical western aesthetics. The FeMC reincarnated and wanted to protect her brother, can't remember if the book she reincarnated to was bl. The MC has white hair. Also she calls her fiance "a human excel", she proposed to her fiance just cuz of this. From what I can remember her fince always carry a cane. And.... unfortunately that's the only thing I remember. I only read a couple of chapters on this manhwa.