Well, a common theme is the clash of their ideologies within the context of the kidnapping. Ink, who is all about creation, and Error, who is about destruction, are forced to interact closely. This can lead to some really interesting dialogues about the purpose of their existence. Another theme is the role of other characters in response to the kidnapping. Some fanfictions might show how other minor characters react to Ink's disappearance and what they do to find him. And the theme of change is also there. Both Ink and Error could change in some way due to this extreme situation.
A frequent theme is the unexpected bond that might form. Despite the initial hostility of a kidnapping situation, Ink and Error could start to understand each other better. There's also the theme of the setting. The place where Ink is kidnapped to can play a big role. It might be a dark, desolate place representing Error's world, which can add to the overall mood of the fanfiction. And sometimes, the fanfictions explore the concept of redemption. Error might have some form of self - realization during the kidnapping and start to question his actions, especially if Ink has an impact on him.
Another theme is the idea of redemption. Error, being seen as the 'bad guy' in some ways, might be on a path of redemption through his relationship with Ink. Ink could be the catalyst for Error to change his ways, or at least see things from a different perspective. This adds depth to their relationship and the overall story.
In this kind of plot, their relationship could develop in a rather complex way. Initially, Error's act of kidnapping is a huge violation of Ink's freedom. However, during the time they are together, they might discover some common ground. Maybe they both feel lonely in their own ways. Ink, being a protector of the AUs, might seem to have friends but still feels a sense of isolation. Error, being the destroyer, is also alone. This realization could lead to a less hostile and more empathetic relationship.
One common theme is the struggle for freedom. Since they are in a capture situation, both Ink and Error usually fight against whatever is holding them. Another theme is the exploration of their relationship. In these fictions, their connection is often deepened or changed due to the shared experience of being captured.
In undertale error x ink fanfiction, a prevalent theme is the power struggle. Error has his own power set and Ink has his. How they use their powers in relation to each other is often explored. Additionally, the theme of identity is present. Both characters have distinct identities and the fanfictions may show how their relationship affects or challenges their individual identities. For instance, Error may question his role as a destroyer when he gets closer to Ink, who is all about creation.
A common theme is the conflict between Ink and Error. Ink represents creation while Error is about destruction, so their relationship is often filled with tension and drama.
Many fanfictions also explore their relationship on an emotional level. How they come to understand and care for each other. Some might show a slow - burn relationship where they start off as enemies or at least not friends and gradually develop feelings for one another. It's all about the complex dynamics between these two interesting characters.
One common theme is the exploration of friendship. Since Frisk is often seen as a positive and empathetic character, they can bridge the gap between Ink and Error who are quite different from each other.
The theme of redemption also shows up often. Error, being the more 'evil' of the two in a sense, can be on a path of redemption through his relationship with Ink. Ink, in turn, might learn more about the importance of balance between creation and destruction. Additionally, there are fanfics that focus on the idea of them being two sides of the same coin, and how they can complete each other.
One popular theme in Ink Sans x Error Sans fanfiction is the idea of balance. The two characters seem to be polar opposites, and fanfiction writers explore how they could potentially bring balance to each other or to the multiverse as a whole. Also, the theme of acceptance is quite prevalent. Ink Sans accepting Error Sans' destructive nature and Error Sans accepting Ink Sans' creative chaos can lead to some really heartwarming or thought - provoking storylines.
One cute Ink x Error fanfiction could be about them getting lost in a magical forest together. Ink is curious about all the strange and colorful plants, while Error is a bit grumpy but secretly enjoys Ink's enthusiasm. As they wander, they start to rely on each other more and more, and a cute bond forms between them.