The one where I was seduced by the summary only to be slapped by 80 chapters of physical and mental abuse. The ML has no redeeming qualities at all. Everybody failed the MC at some point, yet the all want something from him. I stuck around to finally, FINALLY, see some face slapping, but the kidnapping was truly my breaking point. I've never had a manhwa break me quite like this, but Black Lotus did it.
I came here to see some face slapping, but ended up getting slapped myself.
Black Lotus