A plot could involve Hell Kaiser being sent to evaluate Syrus for some special training program. As he watches Syrus, he discovers that Syrus has some unique qualities that could be both an advantage and a disadvantage. There could be a conflict where Hell Kaiser has to decide whether to report accurately or help Syrus overcome his weaknesses first. The story could also include duels where Syrus shows his growth under Hell Kaiser's watchful eye.
Perhaps the plot could start with Syrus being in a slump in his dueling skills. Hell Kaiser, out of curiosity or some other reason, starts to watch Syrus closely. Syrus then gets involved in a series of duels against tough opponents. Hell Kaiser, while watching, starts to form an opinion about Syrus's style and strategy. As the story progresses, Syrus might become aware of Hell Kaiser's presence and be inspired to improve, leading to a final showdown where Syrus showcases his new - found skills that were influenced by Hell Kaiser's unspoken observations.
Yes, there are likely some out there. You can start by checking fanfiction websites like FanFiction.net or Archive of Our Own. Just search for 'hell kaiser watches syrus' in the Yugioh section and you might find some interesting stories.
One possible plot could be that Syrus, while exploring an ancient library in the Duel Academy, stumbles upon a hidden spellbook that has a connection to the Dark Magician Girl. He accidentally summons her in a weakened state. Then, they have to work together to regain her full power while facing various challenges from other duelists who want to capture the Dark Magician Girl for their own purposes.
One likely antagonist could be Chazz Princeton. He's often shown as a bit of a bully in the Yugioh series, and he might target Syrus out of jealousy or just to assert his dominance. Another could be an original character created by the fanfiction writer, perhaps a new student at Duel Academy who has a vendetta against Syrus for some reason. The Society of Light could also be antagonists in a sense, as they might try to manipulate Syrus or use him in their schemes, which could lead to him getting hurt.
One common plotline could be Syrus facing bullying at Duel Academy which causes him emotional hurt. Maybe some upperclassmen pick on him for his dueling skills or his timid nature. Another could be Syrus getting hurt in a dangerous duel, like against a powerful opponent who uses underhanded tactics. Also, he might get his heart broken in a romantic sub - plot within the Yugioh world, perhaps by someone he has a crush on who doesn't return his feelings.
Maybe Zane and Syrus get trapped in a strange virtual world created by some glitch in the digital system. They have to rely on each other's skills to find a way out. Zane's logical thinking and Syrus's knowledge of the digital realm might be combined to overcome the various obstacles like malfunctioning programs and security barriers.
One possible plot could be that in a crossover world, the Yugioh characters are somehow transported to the Naruto universe. However, the Naruto characters neglect them, thinking they are just strange intruders. The Yugioh characters then have to find a way to get back home while dealing with the indifference of the Naruto world.
It could be about a duelist who secretly steals rare cards at night. Maybe he's a desperate collector or someone being forced to do it by a more powerful figure in the Yugioh underworld.
Their interaction could start with Syrus having a strange dream about the Dark Magician Girl. When he wakes up, he starts noticing little signs around the Duel Academy that seem to be related to her. One day, while dueling, he makes a move that somehow creates a small rift in the magic world, and the Dark Magician Girl steps through it for a brief moment. That moment of eye contact is the start of their interaction.
Another possibility is that Camila is being controlled by a more malevolent force. This force wants to disrupt the harmony at Duel Academy, and Syrus, being a key part of the group of friends, is targeted. The injury could be a way to start a chain of events that would lead to chaos and drama among the students, which would make for an interesting plot in the fanfiction.
In the 'hamilton watches the play fanfiction', it might be that the play he's watching is set in a different time period than his own. So he's seeing how his actions and the events of his time are being reinterpreted in this new context. For example, if the play is set in a more modern era, he might be shocked at how freely people talk about the topics that were considered taboo in his day. He could also be fascinated by the new styles of acting and stagecraft that he's not used to.