A great topic could be their team - up against a common enemy. They could combine their powers in unique ways to save the world or a particular realm.
No. Writing fanfiction that involves sexual content about characters is inappropriate as it goes against the respect for the characters and the source material. Also, it may not be suitable for all audiences and can violate ethical and moral standards.
One great Loki and Wanda fanfiction is 'The Unlikely Alliance'. It shows an interesting dynamic between them as they team up to face a common enemy in the multiverse. The story is full of action and some really cool magical battles.
The plot could involve Loki's mischief and Wanda's powerful magic clashing or collaborating. Maybe Loki tries to trick Wanda at first, but she sees through his schemes with her mind - reading abilities. Then they could end up teaming up against a common enemy, like a powerful dark sorcerer threatening the multiverse.
One great topic is Pokémon trainer's journey. For example, a young trainer starting from a small town, facing challenges in different gyms, and gradually growing stronger. It can include how they catch new Pokémon, train them, and form deep bonds with their Pokémon team.
One great topic could be their adventures together. For example, how they face a new and dangerous dragon species while exploring uncharted lands. This can show their teamwork and growing bond.
One great topic is Naruto's journey to become Hokage. It can include his struggles, how he overcomes various challenges, and his relationships with the villagers along the way.
Loki's sly and cunning personality would likely clash with Wanda's more guarded and powerful nature. Loki would probably try to charm her at first, but Wanda would be skeptical. However, over time, they might find a balance as Loki realizes he can't easily deceive her and Wanda sees there's more to Loki than just his trickery.
You can start by looking on Archive of Our Own (AO3). It has a large collection of fanfiction, and there are likely many Loki and Wanda stories there. Just use the search function and type in their names.
One great topic could be their adventures after Hogwarts. Maybe they go on a quest to find a lost magical artifact together. It could show how their skills as wizards complement each other.
One appropriate topic could be Sasuke's redemption arc. How he overcomes his past mistakes and finds a way to make amends with his friends and the village. For example, exploring how he uses his skills to protect Konoha after realizing the importance of his bonds.