As a fan of web novels, I don't have the ability to post a book by Maupassant called Fear or Horror. However, I can tell you more information about 'Fear' and 'Terror' by Mauricio.
'Fear' by Maupassant was a short story published in 1881. The story was about a young doctor who met a mysterious patient in a hospital. The patient seemed to have an unspeakable secret that made him feel afraid and uneasy. This story explored the fears and desires of humans and the thoughts and actions of doctors in the face of their patients 'fears.
The Terror of Maupassant was a long novel published in 1882. The story was about a wealthy businessman who suddenly disappeared one night. His family and the police launched an investigation to find him. In this story, the author explored the influence of human desire and power on human nature and the inner world of a wealthy person.
I think 'Ao Haru Ride' could be a good choice. It has a comparable focus on the emotional journey of the characters and a similar style of storytelling.
Typically, 'manga de science fiction' often features advanced technology that doesn't exist in our current world. For example, things like flying cars, giant robots, or mind - control devices. It also tends to explore different social structures. Maybe in a future where the Earth is overpopulated, how do people live? And there are often strange new species or mutations. Like in some manga, there are human - like creatures with special powers due to genetic experiments.
I'm not too familiar with 'de shisen manga' to make a direct comparison. But usually, such comparisons depend on factors like art style, storylines, and character development.
Manga de hentai yaoi is usually more explicit and focuses more on sexual content compared to regular yaoi manga, which might have a stronger emphasis on the relationship and emotions between the characters.
I can't tell if Zombie's Infinite Terror plagiarized Infinite Terror or not. More information was needed to make an accurate judgment, such as whether there were similarities in the plot, character setting, theme, and so on. However, plagiarism generally referred to the act of copying or borrowing content from another person's work without authorization. If you want to confirm whether a novel plagiarized another novel, it is recommended to read both novels and carefully compare their plots and content.