Three other novels by Melville could be 'Pierre', 'Benito Cereno', and 'The Confidence-Man'. They each have their own unique themes and storytelling styles.
There were many choices for the same suit jacket from Golden Morning. Jin Chen wore black, pink, and off-white suits, each of which displayed a different style and temperament. She also had a variety of matching methods, including jeans, short skirts, jumpsuits, and white T-shirts. However, the search results did not mention which brands or styles were the same as Jin Chen's suit jacket. Therefore, I don't know the specific information about the suit jacket of the same style as Golden Morning.
In the novel," Full Time Expert," Ye Xiu's jacket was a black hooded sweater with a gray zipper. There was a white circular logo on the chest with the letter " G " on it. This jacket was Team Happy's uniform, and it was also something Ye Xiu often wore in matches and in his daily life.
While waiting for the anime, you can also click on the link below to read the classic original work of " Full-time Expert "!
MODOK is not Yellow Jacket. They have separate identities and roles within the comic world. MODOK is known for its large head and mental abilities, whereas Yellow Jacket has its own unique characteristics and adventures.
The significance could be sentimental. Maybe it was the first piece of clothing the protagonist bought with their own money, so it represents independence.