What did the son of the weather satirize?

The film satirizes social injustice and moral kidnapping.

In The Son of the Weather, Van Gogh can only feel the beauty of Tokyo from the tower representing the upper class, and it is the upper class that makes Cai Yang lose his job opportunities. Makoto Shinkai, the author, wants to tell people through The Son of the Weather: Everyone lives for himself, don't take other people's ideas as his code of conduct, and learn to refuse moral kidnapping and live a noble life.

Son of the Weather is an animated film produced by CoMix Wave Films, a Japanese animation company, which tells the fantastic love story between Van Gogh and Cai Yang, a young girl who has the ability to manipulate the weather.