Or so Yuda is saying. And the fact that he's saying this does not mean that it is true, or even that Yuda believes it to be true. It's possible that he's saying things just to make Okaya angry and sloppy. ("The idiot thinks that is what this is about?!")
Um, just a warning. In the event that any of the sensitive souls reading this hold, as many sensitive souled people do, that NTR is a trash fetish ... you might want to stop reading this now.
His work is reasonably well-known in Japan, I think. The full title of the visual novel "Yu-No: The Girl Who Chants Love At the Bound of the World" is another reference to the same thing.
No one can do that, because this chapter is the newest published chapter. The next one will not be released for two weeks. The translation is not behind the Japanese original. There are no spoilers to be given.