You need to pay close attention to the details and look for clues throughout the story. Sometimes, it could be hidden in a special scene or behind an object.
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.
Well, in the end of Cirque de Freak, there are some unexpected twists and turns that lead to a satisfying conclusion for most characters. The final scenes bring closure to the various plot threads that have developed throughout the series.
The main distinctions might lie in the way the characters are developed and the overall tone of the manga. It could have a more daring or avant-garde approach that sets it apart.