That is a HUGE mistranslation, she didn't get raped or gangbanged or anything. She was threated that she would be raped and impregnated. It didn't actually happen cuz ML saved her.
The author did get a lot of backlash. Koreans were unhappy with how many times 'rape' was mentioned everywhere so the author changed the threat to scarring her face
Here's where I read the spoilers from
https://forum.novelupdates.com/threads/the-viridescent-crown.114628/page-2
And whether or not the novel is shit, we have to continue to read this manhwa and just see it for ourselves. Maybe the manhwa will deviate from the original