I find this narrating style very interesting. I have encountered it in many Japanese documentaries and such, and it sounds always like the narrator is overflowing with happiness (for a westerner, at least) ☺️ It’s very weird for us, I think, our narrators usually tend more toward the cheesy epic tone. That’s just based on my experience though P. S. 中田さん is amaaaaaazing
It's weird because in my country, voice overs in documentaries usually speaks with a normal, calm tone, only some types of documentaries such as police documentaries are different (with some exceptions, especially with the older ones).