Why is Japanese classical music so weird and desolate?

For example, "Sakura" is lalas Las Vegas do si la Fami do Fermi do not have re and so on. This scale is explained from the perspective of music major, and there will be some particularity, which I don't quite understand. You can simply have a look. It is equivalent to a seven-tone scale, in which re and so are removed, the semitone relationship between si do and mi fa is all preserved, and the fourth degree between fa si also exists, and so on. These characteristics make the music written with this scale feel cold and even uneasy. The pentatonic scale do re mi so l a do is much smoother than this, and the semitone has nothing to do with the fourth degree, so many traditional music in China will not feel as popular as Japanese. Most of the above is nonsense. In short, the core is that its scale makes you feel strange and sad. If you walk into a movie and ask why this scale makes people feel wrong, it is a human physiological problem.