Shrimp's manga / #Shaman(1)

Soo there's a lot i wanna cover. 1. The black MC, Lee Do-rim, he didn't like blonde MC, Eun Cheon but then he all of sudden did? It doesn't make sense how quick he turned around on that. 2. Weon practically slept with his step brother bc in that time his brother was possed by evil lustful spirit or incubus? Not sure. And then they kinda switched, meaning that spirit was transfered into Weon so he is that spirit now. 3. Weon kidnapped the shaman and then raped him, or more the lustfull evil spirit has raped him 4. How isn't the shaman phased by that and just went on with it, myb bc he was raped by other evil spirits since he was young. Anyway all of this is fucked up and not good to read again. The story had much more potential.