A possible plot is that Alice gets amnesia and forgets all about her time in the Country of Hearts. The other characters then have to try and make her remember while also dealing with their own feelings for her. Or, she could be given a task by the Queen of Hearts that if she fails, she will be banished from the country forever. She has to rely on her wits and the help of some unexpected allies to succeed.
For a fanfiction plot, Alice could start having dreams that seem to predict future events in the Country of Hearts. She tries to use these dreams to prevent disasters from happening. However, some of the characters think she is trying to gain too much power with this knowledge. This could lead to a conflict where she has to prove her intentions are pure while still trying to save the country.
For a 'alice and the country of hearts fanfic', you could create a scenario where Alice accidentally switches bodies with one of the card - characters. This would lead to a lot of humorous and also challenging situations as she has to navigate the world from a different perspective while trying to figure out how to switch back.
You could also write a fanfiction centered around a mystery. For example, a strange event occurs in Pandora that only Break and Alice seem to be aware of. They have to work together to solve it, and during the process, their relationship deepens. As they uncover clues and face challenges, their bond becomes stronger, and new aspects of their personalities are revealed.
One possible interesting plotline could be the unique relationships that Alice forms with the various characters in this fanfic. Maybe she has a special bond with a particular character that is different from the original story.
One idea could be exploring the backstories of the new characters introduced in Kingdom Hearts 3 in more depth. For example, you could write about how they came to be in the different worlds and what their true motives are.
One idea could be a story where Alice and Jasper travel back in time to their human days and have to deal with their past selves. Another could be a scenario where they get separated during a battle with a new group of vampires and have to find their way back to each other. Maybe a story where they discover a new power together that only they can use as a couple.
One idea could be that Alice returns to Wonderland as an adult and finds it has changed completely. The once friendly characters are now in a state of chaos due to a new dark force. Another could be a story where Wonderland is connected to our world in a more secretive way, and Alice has to keep the balance between the two. Or perhaps a fanfiction where Alice teams up with the Cheshire Cat to solve a mystery that involves all the Wonderland characters and their forgotten pasts.
One plot idea could be that the kiss is a result of a magical or cursed situation. For instance, they might have to kiss to break a spell that is affecting the Pandora Hearts realm. This would add an element of mystery and adventure to the story.
In 'alice in the country of hearts oc fanfiction', the characters are often complex. The OC (original character) might bring new dynamics. For example, if the OC is a strong - willed person, they could change the interactions with the existing characters like Alice. They might have different reactions to the strange and often dangerous situations in the Country of Hearts. This can lead to unique storylines that deviate from the original while still maintaining the essence of the 'alice in the country of hearts' world.
One idea could be that the Heartless somehow find their way into the Marvel universe and start attacking various locations. The Avengers, being the protectors, team up with Sora and his friends from Kingdom Hearts. They initially have some clashes due to different fighting styles and ways of understanding the world, but eventually learn from each other and combine their powers to defeat the Heartless. For example, Iron Man could use his technology to analyze the Heartless' weaknesses, while Sora uses his Keyblade to directly combat them.
Well, a great plot for a Kingdom Hearts 3 Aftermath fanfiction could involve the relationships between the different characters. Like, how Riku and Kairi's friendship might have evolved. Also, since Xehanort was defeated, there could be a power vacuum. Some villains might try to take advantage of it, and the heroes have to stop them before a new, greater evil rises. It could also show the daily lives of the characters in a more peaceful time, with little hints of the past adventures.