I think it might mean that there's a caricature of a gentleman who is a legionnaire and is in a fight. But this is just a guess based on the words. To understand it better, we'd need more background information.
Faire un visual novel involves several steps. Storytelling is key. Outline your plot, develop your characters, and think about the different paths the story can take if it's a branching narrative. For the art part, you can collaborate with an artist if you're not skilled in that area. Regarding the programming side, if you're using a tool like Twine, it has a relatively simple interface for creating the structure of the visual novel. Don't forget about the user interface design. It should be intuitive so that the players can easily navigate through the story.
Well, they could change their own relationships. Perhaps Hermione would be able to help her younger self be more confident. Ron might stop himself from making some of the silly mistakes he made in the past. And Harry could get to know his parents better. They could also influence the development of magic in Hogwarts. For instance, introduce some new spells or magical concepts they learned in their original time.
In fanfiction, they might relive their old memories. They could visit their favorite spots like the library where Hermione used to study all the time. Maybe they would share their experiences after leaving Hogwarts with the new students.
Harry might be more confident. Since he already knows what will happen, he won't be as scared or uncertain. Ron could be less jealous. He has seen how his jealousy got in the way in the past. Hermione would probably be more laid - back. She won't have to worry as much about grades and knowledge because she already has it all.
I think the 'un political cartoon award' might refer to some kind of award related to non-political cartoons. But without more context, it's hard to say exactly what it entails. Maybe it's for cartoons that focus on non-political themes like entertainment or personal experiences.