Some months ago, Ryuki and Yuta were talking about cockold.
"Actually, these cuckolds or cuckqueans are people who don't enjoy sex but enjoy watching it. There are some who have a fetish like this from the start, but most of the time, it's porn that makes them cockold because porn is inherently the third person watching two people in sex, making the brain feel that this is what sex is all about, so these won't feel pleasure if they do sex since it's first-person view but enjoy sex if other are doing it.
Of course, that only happens if the person has no purpose in his life and uses the majority of his time in porn videos. Oh yes, there is also the reason that sometimes later, men stop enjoying the vanilla sex and start going to extreme porn sex, those men who fell deep into this enjoy it if their woman gets gangbang, and these men also watch NTR, so they began to think it as normal when it's not."
"Well... How does that work?" Yuta asked.