So, personally, I'm not expecting them to SHOW the displays of affection. I just find it so damn jarring when he gets shy and stutters/starts making excuses like the thought he and his wife could be intimate is an absurd notion to him EVERY.SINGLE.TIME. It just takes it to a 10 when you realize they've been married (more than likely lived together shortly before that as well) for years now and have a child. I just want the guy to occasionally laugh, not get embarrassed so easily and even joke back with her.
If I ONLY wanted to see him being teased, the original with them as kids is still ongoing ( or at least fans are still translating it) I could read that instead when it's essentially a 1:1 similarity and the only difference is... Chi.
Outside of that, I really don't have an issue with it. And ya, I know it is indicative of Japan's view on sex and intimacy. But I can't take that seriously when they're top five in the world for sexual entertainment, they have a massive sex industry and escort business.