I read a summary and explanation of this manhwa from comïx (am I allowed to say that site here, I mean is that a bad idea )
The lewd and gloomy savages are coming![Sexual Iinvasion Short Story Collection] Landing now!...
- Author: Pisangu, Matryo, Dallinkicha, Jakpil, Bammandeuk, Charyeok, White Yangmal, Geonwon, Ma Samchil, Baetodi
- Genres: Supernatural / Drama / Romance / Webtoons / Yaoi
man.. some people did this in 4 days I did it in 4 yrs