She could be doing it out of desperation. For example, if there is a prophecy that says only by kidnapping a certain character can she prevent a catastrophic event from happening in the Yu - Gi - Oh! R universe. So she takes matters into her own hands.
In the fanfiction, perhaps Anzu has a good reason for the kidnapping that she believes in. She could think that the kidnapped person holds the key to saving the Yu - Gi - Oh! R world from a greater threat. It would be a complex story with Anzu being a morally grey character rather than a pure villain.
Anzu may physically defend Mokuba if it comes to it. She could use self - defense moves she has learned. If the kidnappers get too close to Mokuba, she jumps in front of him and uses her strength and agility to fend them off. She might also use nearby objects as weapons, like a stick or a rock, to keep the kidnappers at bay.
It could be some rival businesspeople who want to use Mokuba as a bargaining chip against his family's company. They might be jealous of the power and success of Mokuba's family and think that by kidnapping him, they can gain an upper hand in the business world.
Another possibility is that the kidnappers are after Alexis because of her family's influence in the dueling world. They could be trying to use her as a bargaining chip to get access to some rare and powerful duel cards. Her brother Atticus might also get involved and use his own resources outside of the academy to try and rescue her.
One popular 'yugioh kidnapped fanfiction' might involve a character being kidnapped by an antagonist from the Yugioh universe. For example, a fanfiction could have Yugi being kidnapped by Marik to force him into a shadow game. However, these are often created by fans and vary widely in plot and quality.
Some Yugioh fan communities on social media platforms might also be a good place to look for 'yugioh kidnapped fanfiction'. For example, on Tumblr, there are often users who share or recommend fanfictions. You can search for relevant tags like #yugioh #kidnapped #fanfiction. However, the availability might be more scattered compared to dedicated fanfiction websites.
Maybe a heroic character like a detective or a super - powered being within the fanfiction will come to Anzu's rescue. This character could have been tracking Prisoner 777 all along and finally catches up to him when he kidnaps Anzu.
Anzu could use her wits. If she can find a moment when Bakura is distracted, she might be able to run away. Maybe she could create a diversion, like knocking over something noisy to draw his attention and then make a break for it.
There could potentially be such a fanfiction, but it's not a very common or well - known trope in general fanfiction. It really depends on the fandom or the creative minds of individual fanfiction writers. Maybe it exists in a very niche or specialized area of fan - created works. You might also consider reaching out to fanfiction communities or forums to ask if anyone has heard of or read such a story.