The story of the film takes place in the future, and the stage is Japan, which has adopted a completely shut-in policy. It can be described as a typical science fiction theme. However, in the eyes of Director Zeng Li, this fantasy-filled work is actually quite realistic.
The idea of "Locking the Country" in the film originated from the "lock-in" phenomenon of people in today's Japanese society. Mobile phones and the Internet have made people's contact more and more convenient, but face-to-face communication has been sparse. Is the rapid advancement of science and technology cutting the connection between people unconsciously, becoming more and more isolated? This anxiety in the mind of Director Zeng Li is the source of the theme of the film, and the imaginary closed Japan in the film hints at the true form of modern society in an extreme form.
Director Zeng Li considers himself a CG technician, and he has always advocated that technology must serve people. The purpose of using cutting-edge CG technology to make animated movies is not to show off skills, but to make big scenes that cannot be achieved in live-action movies. In Sone's view, it is challenging to make highly difficult CG effects, but it is not very interesting to blindly pay attention to this aspect. In the final analysis, the focus of the movie is to portray people.