Another way to look at it is that Tatsumi could be seen as the antagonist from Esdeath's perspective. Tatsumi is part of a group that wants to overthrow the system she is protecting. So, in a sense, he is the one causing trouble for her. But overall, in the context of the story's themes of justice and freedom, Esdeath's actions are more in line with being the antagonist as she represents oppression, while Tatsumi represents the fight for liberation.
It might not be so straightforward. While Esdeath has the potential to be the antagonist, there could be other forces at play. For example, there could be a third party that is manipulating both Tatsumi and Esdeath for their own gain. In this case, both Tatsumi and Esdeath could be seen as victims of this greater evil, and they might have to team up against this new threat. However, if we consider the traditional view, Esdeath's actions and beliefs are in direct conflict with Tatsumi's, so she remains the likely antagonist.
In this fanfiction, Tatsumi could be sent on a special mission that requires him to infiltrate Esdeath's inner circle. He disguises himself and gets close to her. Esdeath, who has a sixth sense for these things, suspects Tatsumi but plays along. As they interact more, there is an underlying tension between their opposing ideals, yet also an attraction that neither can fully understand or deny.
In a fanfiction where Tatsumi meets Esdeath early, one possibility is that Esdeath would immediately be intrigued by Tatsumi. She might see his potential and try to recruit him into her forces right away. Tatsumi, on the other hand, would likely be very cautious as he knows Esdeath's cruel nature. He might try to play along at first to avoid getting killed, but secretly be planning his escape.
One potential plot twist could be that Esdeath, instead of being hostile towards Tatsumi, decides to protect him. This would be a huge shift as she is known for her brutality. It could be because she sees something unique in him that makes her want to keep him safe, which would completely change the way Tatsumi views her and the power dynamics between them.
In certain fanfiction works, Tatsumi is indeed made into Esdeath's pet. This can be a way for writers to explore darker or more extreme versions of their relationship. It might involve Esdeath treating Tatsumi in a demeaning way at times, or it could also lead to a strange form of affection developing between them as the story progresses. It really varies from one fanfic to another.
Tatsumi would likely react with defiance. He's a brave character and wouldn't easily submit to Esdeath's kidnapping. He might try to fight back right away if he has the chance.
The relationship in a 'Tatsumi and Esdeath married' fanfiction would likely start off on shaky ground. Tatsumi is not fully on board with the marriage, but Esdeath is head - over - heels. As time goes on, Esdeath would use her power to protect Tatsumi, which would start to win him over. Tatsumi, being a good - hearted person, would try to find the good in Esdeath and encourage her to use her power for better things. Their relationship would develop as they face various challenges together. For example, they might have to deal with political intrigue or threats from other powerful individuals. Through these experiences, they would form a bond based on trust, respect, and a growing love for each other.
In this fanfiction, the development of their relationship would be full of twists and turns. Esdeath is used to getting her way, but Tatsumi won't just submit. This would lead to some initial clashes. However, as they face difficulties together, like threats from other villains or problems within their community, they would realize how much they need each other. Esdeath would start to value Tatsumi's ideals more, and Tatsumi would see the good in Esdeath's loyalty. Their relationship would grow from a forced union in some ways to a deep and loving bond.
One possible plot could be that Tatsumi and Esdeath, after getting married, try to find a balance between their different ideals. Tatsumi, with his sense of justice, might influence Esdeath to be more empathetic towards the common people. They could face challenges from the political unrest in their world, and together they use their combined strength and influence to bring about positive change in their society. Also, their relationship could be a source of conflict among different factions who either oppose or try to use their union for their own gains.
I'm not sure specifically about 'lemon' fanfiction as it often involves inappropriate or adult - themed content. However, there are many regular Tatsumi and Esdeath fanfictions on various fanfiction platforms. You can try Archive of Our Own or Fanfiction.net and search for their relationship - based stories that are more in line with general storytelling and character exploration.
One common theme is the struggle with their different personalities. Tatsumi is often portrayed as more kind - hearted, while Esdeath is cruel. So when she becomes pregnant, there might be a theme of her learning to be more empathetic. Another theme could be the protection of the unborn child, with Tatsumi taking on a more protective role.