This is a quite interesting and different show from the other "Ultraman" series in the franchise. Tsuburaya is always alert of what the competition is doing and two years before, a tokusatsu for adults titled "Garo" changed the game and it was obvious that Tsuburaya decide to make its own response to that kind of tokusatsu, even the two main characters were dressing trenchcoats black and white, just with different fabrics and swapping who wears each color. The show employs elements from "Men in Black" and "The X-Files" set in an ambiance in the style of "Blade Runner" but even so, you can think in a merging between elements from "Ultra Q" and "Ultraman" where instead of using Hayata is opting for "Ultraseven" which is a smart choice since you can say that "Ultraseven" was kinda the first tokusatsu for adults, since on its original run wasn't sucessful with kids but soon found a good fanbase in reruns past midnight with adult audience. If you're looking for a good tokusatsu with mature tone outside of "Garo" franchise, then "Ultraseven X" is your best option.