One common theme could be adventure. Since Penn Zero is often about adventures, it might carry over into the fanfics. Another could be friendship or a budding relationship between Penn and Sasha.
Well, I haven't come across a particular 'penn zero x sasha fanfic' that stands out. However, if you check some popular fanfic communities and use relevant tags, you may find some interesting ones. You could also ask in fan groups dedicated to the show or characters.
Growth is another theme. Fanfics may show Sasha and Connie growing as individuals within the context of their relationship. They learn from each other, become more mature, and their relationship evolves as they develop new skills and perspectives.
One common theme is adventure. Given their backgrounds, fanfic writers often create stories where Nicolo and Sasha embark on exciting adventures together, facing various challenges and enemies.
There could also be some fics that explore a more psychological connection between them, given Sasha's expertise in the field of the mind. Maybe they have some mind - to - mind interactions that lead to a deeper understanding and relationship between the two characters.
Another theme is the power of friendship turning into love. They start off as comrades or friends perhaps, and then the story shows how their relationship deepens into something more romantic. For example, in some fanfics, they go through adventures together which bring them closer and closer until they realize their true feelings for each other.
One common theme could be adventure. Maybe Zero and Cc are on some sort of quest together. Another theme might be friendship development, showing how their relationship grows over time.
One common theme could be friendship - how their initial friendship blossoms into something more. Maybe they start as comrades in some sort of adventure and gradually develop deeper feelings for each other.
One common theme is friendship. Their bond as comrades is often explored, like how they support each other during tough times in their battles. Another theme could be growth. Writers might show how Connie and Sasha grow as individuals while also being friends.
Another theme is friendship. Since Sashi is part of a team, fanfictions often show the bond she has with Penn and Boone. For example, stories might focus on how they support each other during difficult missions.
Friendship is a common theme. Since they are comrades, many fanfictions explore how their friendship could develop into something more. For example, they might start to rely on each other in different ways than just as fellow soldiers.