I'm a sucker for time-travel romance, but this is like an inferior version of Inuyasha or the Korean manhwa Bride of the Water god. Or Ouke no monshou, or Red River, or Hakuranaru toki no naka de, or... Basically any I've read. I did buy the whole thing on Kindle (mostly out of guilt for reading the scans, NOT out of liking it,) but... It just doesn't stick with you. I read it like last month or the month before, and can't remember the name of a single main character.
Also the male lead is toxic even by "historical jerk must learn modern ways from the heroine" trope standards. Stealing her VOICE-? For YEARS? REALLY? Considering that the "ancient Japanese time travel romance" genre at this point is pretty much dominated by thinly-disguised Inuyasha fanfics, it's worth noting that in that series, even one of the villains healed a selectively-mute girl who'd helped him (and then remained a murderous villain for twenty-odd more volumes.) (Nobody's perfect.) I feel like the author saw the drama potential in that (oh kawaii SHE CAN"T TALK how drama and SAD uwu) that and missed how cruel and dehumanizing it was.