I want to ask, why do Altman and Little Monster always appear in Japan?

There are two main reasons why Altman and Little Monster often appear in Japan. First of all, Japan is the birthplace of Altman's story and is deeply influenced by Japan's special photography culture. Secondly, Japan provided a wealth of scenes and resources for Altman's TV shooting, which made Altman's story better displayed.

Specifically, Altman's story is mainly created and produced in Round Valley Production Company in Japan, so the story background and character setting are closely related to Japan. In addition, in order to shoot Altman's TV program, the production team needs a lot of scenes and props. Because of the high production cost of these scenes and props, using local scenes and resources in Japan can effectively reduce the shooting cost.

Generally speaking, the appearance of Altman and Little Monster in Japan is influenced by many factors such as Japanese special photography culture, scene resources, shooting cost and so on.