Miyazaki will promote "truth, goodness and beauty" in his works. In Miyazaki's animations, the world is very simple.
For characters in animation, the “most important” thing is definitely not money and reputation, but often a loved one. In "Howl's Moving Castle", Sophie fell in love with Howl and was transformed into an old woman in her 90s by magic. She also took this opportunity to enter Howl's heart and discovered that he was a lonely child.
In the second half of the film, Sophie came under the starry sky in Hal's memory. The ground was full of white wild flowers and shooting stars streaked across. The childhood Hal came from the small house by the water. He ran out of the house - this was the moment when Hal opened his heart and gave his love to Sophie. Through this beautiful picture, what the audience reads is not lonely waiting, but persistent and touching love.
Extended information:
Behind the scenes production
The movie sets the love story against a war-torn background, making it more touching. Despite the pain he endured during the production of his two previous films, and amid rumors of his impending retirement, Miyazaki returned to the drawing board to begin work on a second literary adaptation.
Similar to "Princess Mononoke", the film also has a cursed protagonist. But this time it was replaced by an ordinary girl Sophie.
Like other Hayao Miyazaki's works, this film has many detailed designs, but it is one of his works that pays the least attention to the storyline
Baidu Encyclopedia - Howl's Moving Castle