I think the point on which we're at cross-purposes is basically the extent to which the fantastic is supposed to have affected Japanese culture.

If you're saying that superheroes running around has affected DC Japanese superheroes, that's a fair point and makes sense. In the DC universe, the fantastic affects the fantastic all the time. But if you're saying that superheroes running around has affected DC Japan's culture in general, with one result being to affect it's superheroes, that's what I thought seemed unreasonable (not on your part, but on the writers'), because American superheroes don't affect DC America, let alone DC Japan. But I think I get from that last post that you're saying the former, so I think actually we agree.