In chapter 322 (not sure about the real number of the chapter.. but you can find it as raw at 314 and translated as 322 in different places ), MC is brutally raping a girl (with purple physique). In the manhua, they are both under an aphrodisiac, but in the novel, there is no such thing! MC is raping her and he is well aware of it.
First, MC hit her to the ground, slap her in the face and slam her onto the wall. He forced himself into her (at that point, MC had an extremely hard body and he was very strong). He blocked her qi (to leave her defenseless) and he ripped off her clothes while she was struggling. She tried to resist, but it's useless.. she tried to bite him so hard, that she almost broke her teeth (MC's body is at least hard as iron).. she also broke her nails, while screaming the entire time. He literally broke her. I don't understand why she started to develop feeling for him after that.
She is physically and emotionally abused.. and MC will marry her.. probably out of pity.. idk.
In the novel, it's chapter 686 ~ 687 (starts in 686*)