It could be that Ron's actions were causing problems within the Order of the Phoenix. If Ron was being stubborn and not following the plans or orders set by the Order, which Sirius is a part of, Sirius might get angry. He would be frustrated with Ron for not being a team player and potentially endangering the mission and the lives of others.
Well, it might start with Sirius yelling at Ron and Ron feeling really bad about it. Then, Ron might try to make amends by doing something brave or helpful. For example, he could volunteer for a dangerous mission to prove his worth and show Sirius that he can be trusted.
One idea could be that Ron has been having a bad day and seeing Hermione at the Quidditch match makes him snap because he feels she should be studying instead. Maybe he's worried about upcoming exams and thinks Hermione is being too carefree. Another idea is that Ron is jealous. He sees Hermione chatting with one of the Quidditch players and gets mad because he secretly has feelings for her but doesn't know how to express it.
Perhaps in the fanfiction, Sirius is mad at Harry because Harry has befriended someone Sirius doesn't trust. Sirius, being protective of Harry, might see this new friendship as a threat. He could be worried that this person will lead Harry astray or put him in danger, and his anger towards Harry stems from his concern for Harry's well - being.
There could be. Fanfiction is a vast and diverse world where authors can take the characters in all kinds of directions. But it's important to note that this isn't in line with the general perception of the characters' relationships in the official books. It might be an interesting exploration for some who like to see how different twists can change the story, but others might be put off by it.
Title: 'Ron's Jealous Rage at the Quidditch Pitch'. In the fanfic, Ron sees Hermione chatting animatedly with one of the Quidditch players. He misinterprets it as something more and gets mad. Hermione is confused by his sudden anger. As the story progresses, Ron realizes his mistake when he overhears Hermione talking about how she was just asking the player for advice on a spell to help the team. They then have a heart - to - heart and Ron apologizes.
In fanfiction, this kind of plot twist can be really interesting. It might be due to the author wanting to explore different character dynamics. Maybe Hermione realizes she has a stronger connection with Sirius in terms of his more adventurous spirit or his different life experiences compared to Ron.
Well, it could be Harry who punches Ron. Maybe Ron betrays Harry's trust in some way, like perhaps revealing a secret of Harry's to the wrong people. And Harry, being really angry about it, punches him in a moment of rage.
There may be such fanfiction in some niche corners of the internet, but this goes against the original nature of the Harry Potter series and is also a rather strange and inappropriate concept. J.K. Rowling's original works don't have any such plotlines, and most official and mainstream interpretations stay true to the original characters' relationships and story arcs.
Another possibility is a jealous rival. Maybe there's someone who is jealous of Gohan's power or his relationship with certain characters. This rival could do things to annoy Gohan and push him to the edge of his temper.