From what it looks like, he’s already cucked. He noticed she is more affectionate to the Japanese guy who work for their kingdom.Geez that knight is spineless as hell. No wonder he's gonna get cucked. He kinda deserves it.
I must say, it'd be absolutely hilarious if the story will go canon-NTR way, so that Japanese shorty whatwashisnameagain has a huge dick larger than the knight's and is amazing in bed so the knight legit loses to him lololol. I'm assuming all this happened already, because ofc Naoto will fuck them all over across the next chapters.From what it looks like, he’s already cucked. He noticed she is more affectionate to the Japanese guy who work for their kingdom.
If the author want to soften the NTR, it could be Naoto steal her from the other player, but then make it like cleaning up the road for that knight to step forward with his feeling.
After all, the knight brought up the issue about the players bringing their culture and change their world, but the change might not all good.