I'm not sure about the exact characteristics as his work isn't very common knowledge. But generally, science fiction often has elements like futuristic settings, advanced technology, and exploration of different social or ethical concepts.
Fitzgerald might have told the story of Jay Gatz to offer a deep insight into human nature and the complexities of social class. It could be his way of criticizing the societal norms and expectations of that time.
Perhaps Fitzgerald felt that now was the ideal moment to explore Jay Gatz's journey to provide a contrast or parallel to the other characters and events in the narrative.
I'm not extremely familiar with Gatz Hjortsberg's specific science fiction works. However, you could start by checking local libraries or specialized science fiction bookstores. They might have some of his works in their collections.
In such a cartoon, you might expect to see expressions of empathy and support. The girl doing the consoling could have a concerned look on her face while holding the other girl's hand, and the setting could be a peaceful place like a park or a bedroom.
Such a comic might be aimed at a very specific and niche audience with a penchant for the outlandish. It could potentially have elements of horror or satire, depending on the creator's intent.