Often, there are themes related to self - discovery. Both Frisk and Chara have complex characters, and in fanfiction, they might explore their identities further in relation to each other. Also, themes of redemption can be present, especially considering Chara's somewhat controversial character in the original game. They might help each other to overcome past mistakes or traumas.
Love, of course, is a major theme. The love that develops between male frisk and female chara can be portrayed in different ways. It could be a slow - burning love, starting from a simple attraction and evolving into something deeper. Or it could be a more sudden, passionate love. These different portrayals of love add a lot of variety to the fanfictions in this genre.
One common theme is redemption. Chara might be portrayed as having a troubled past, and Frisk helps him find a better path. Another theme could be growth, as they both grow as characters through their relationship. Also, adventure is a theme, with them going on quests together.
One common theme is friendship. Since Frisk and Chara are characters from the same game universe, their relationship development as friends is often explored. For example, how they support each other through various challenges in the Underground.
Another theme is self - discovery. As they interact, both Chara and Frisk might learn more about themselves. For example, Chara could discover a more positive side of themselves through Frisk's influence. In some fanfics, this is a central aspect of the story, with detailed descriptions of their inner thoughts and changes.
Friendship is a very common theme. These fanfics often show how Chara and Frisk become friends and rely on each other. Another theme is adventure. They usually go on adventures in the Underground together, facing various monsters and challenges.
Another common theme could be the distortion of relationships. The relationship between Chara and Frisk is complex in the original game. In these fanfics, when Chara kills Frisk, it distorts that relationship completely. It could also lead to themes of guilt and regret, not just for Chara if the story delves into their emotions, but also for other characters who may have failed to prevent the killing.
One popular theme is friendship. They might explore how Frisk and Chara form a strong bond in different scenarios. Another is adventure, where they go on quests together in the Underground world. Redemption is also a theme, like Chara getting a chance to be redeemed through her relationship with Frisk.
You can start by looking on fanfiction websites like Archive of Our Own (AO3). It has a large collection of fanfictions, and you can search specifically for ones involving Female Frisk and Female Chara. Another option is FanFiction.net, which also has a wide range of works. Just use their search functions and type in the relevant characters to find some interesting reads.
I'm not very familiar with frisk x chara futa fan fictions specifically, but generally in fan fictions about characters from a game like Undertale, themes could include friendship, adventure, and self - discovery. But this is just speculation as I haven't studied these particular fan fictions in depth.
Well, there are definitely some out there. Some focus on their shared experiences in the Underground. For example, a story could be about how they support each other through various challenges. Another might be more about their post - Underground life and how they adapt to the surface world together. It really depends on what you're interested in.