It could be over a rare card. Another duelist might have tried to steal or cheat him out of a very valuable and rare Yu - Gi - Oh card. Zane, being protective of his collection, would not stand for that and got into a fight.
One possible reason could be that he was defending his reputation as a duelist. Maybe someone was spreading false rumors about his dueling skills or accusing him of cheating. In the competitive world of Yu - Gi - Oh in the fanfiction, a duelist's reputation is crucial.
Perhaps there was a rivalry that had been brewing for a long time. Another student, jealous of Zane's success in dueling and his popularity among their peers, finally pushed the wrong buttons and Zane lost his temper.
In the fanfiction, if someone were to insult his dueling skills or question his abilities, that would probably make Zane mad. He takes his dueling very seriously and has a lot of pride in his skills. So any slights towards his dueling capabilities could set him off.
His reputation among other duelists might take a hit. Some might see him as hot - headed or lacking self - control, which could make potential opponents underestimate him or be more hesitant to duel with him.
Experimental cards might be a cause. Zane, being an adventurous duelist, might be testing out some new, untested cards. These cards could have unforeseen consequences and end up hurting him. For instance, a card that was supposed to boost his monster's attack but instead drains his own energy and causes him pain.
In the Yu - Gi - Oh fanfiction, when Zane gets stuck with Syrus, they might have an intense duel training session. Zane could be super strict with Syrus, pushing him to improve his dueling skills. Maybe Zane would share some of his top - secret dueling strategies that he's developed over the years.
Well, in this fanfiction, the plot might center around how Aster and Zane's relationship affects the dueling world. It could be that their love is a secret at first and they have to hide it while still competing at a high level. And then there could be a conflict when their relationship is discovered by other duelists or people in their lives.
In a Yu - Gi - Oh GX fanfiction, Zane could be hurt because of his own over - confidence. He might attempt a really risky move in a duel, thinking he can handle it, but it backfires. This could lead to him getting injured, like his Duel Disk malfunctioning and giving him an electric shock. His pride would take a hit as well as his physical state.
A cool plot could be that there is a mysterious tournament that somehow bridges the two worlds. Duelists from Yu - Gi - Oh GX and Yu - Gi - Oh 5DS are invited to participate. However, it's not a normal tournament as there are strange rules and hidden agendas. The GX characters, like Jaden, bring their fun - loving and sometimes unpredictable dueling styles, while the 5DS characters, such as Yusei, bring their more strategic and high - speed dueling approaches. As the tournament progresses, they start to uncover the truth behind it and have to work together to stop those who are misusing the tournament for evil purposes.
One possible reason could be a misunderstanding. Maybe Aster misinterprets something Zane says or does, leading to a fight. For example, if Zane is trying to keep a secret to protect Aster, but Aster thinks Zane is hiding something bad from him.
Well, his friends would surely rally around him. They might organize a get - well - soon party. Jaden could try to make him laugh with his goofy antics, and Syrus might offer to do his chores for him while he's recovering.
His anger might lead to him making rash decisions. For example, he could challenge someone to a duel without fully thinking it through, which could then create more conflict in the story.