This work has a gentle and low-key plot on the outside. Even if time goes by, it is necessary to fulfill the promise made when you are young. This potential theme is the same as "ほしのこえ". Although this work is set in a parallel universe instead of a mobile phone, it is actually It is the extended version of "ほしのこえ".
In addition, in this work, Xin Haicheng avoids using too many action scenes, but instead expresses the scenes and characters as a gentle timeline, and the created painting style also shows a sense of fragility and beauty. There are also a lot of fine details in the CG background. The music uses a mix of string quartet and piano, and these effects strengthen the theme of the scene. But this work has written too much in explaining the parallel universe.
This work continues the high production standard of the previous work. The delicate and vivid painting quality and the clever combination of the soundtrack have been highly praised in Japan. Unlike "ほしのこえ", which describes the simple relationship between two people, "Kumo no mukô, yakusoku no basho" depicts a broader world. In terms of production system, the entire production process is closer to the so-called "conventional animation". ", considering the content of the work, some more "entertainment" elements have been added. In addition, there are about 30 pieces of music in total, but not all of them are completely different melody. There are three to four main melody, and then the variation based on these melody is used to construct the whole piece.
