A plot could be centered around a dance competition within their group. Lisa is getting a lot of praise from the choreographer. Chaeyoung, who has always been on par with Lisa in dancing, feels jealous. This jealousy could lead to her overworking herself to try and outshine Lisa, which in turn affects their relationship as Lisa doesn't understand why Chaeyoung is suddenly so competitive.
One possible plot could be that a new manager gives more attention to Lisa, like always choosing her for special projects. This makes Chaeyoung jealous as she feels left out. So, she starts to act cold towards Lisa.
A 'chaelisa jealous fanfic' likely focuses on the relationship between Chaeyoung and Lisa in a context where jealousy plays a role. It could be about one of them being jealous of the other's popularity, or perhaps in a more romantic or friendship - centered scenario where jealousy arises due to attention from a third party. For example, if in the fanfic Lisa gets a lot of attention from a new trainee, Chaeyoung might start to feel jealous because she's used to having Lisa's full attention in their friendship.
Friendship is a very common theme. Fanfics often explore the deep bond between Chaeyoung and Lisa as friends.
Astrid might also be jealous in a fanfic when she feels left out. Maybe her friends start spending more time with a new character and she starts to feel jealous of the new friendships forming. This can lead to her trying to win back their attention, creating a lot of drama and interesting storylines in the fanfic.
Adventure is also a theme. Some fanfics may send them on adventures around the world, either for a concert tour or just a fun trip. In these stories, their unique personalities shine through as they face different challenges during the adventure.
One possible plot could be that in the fanfic, Jason is jealous of Percy's natural leadership skills. Percy always seems to know what to do in a crisis, and the other demigods look up to him. Jason, on the other hand, feels like he has to constantly prove himself. So, he starts trying to outdo Percy in every mission, which leads to some tense and exciting situations. For example, they might both be trying to solve a mystery at Camp Half - Blood, and Jason's jealousy causes him to take unnecessary risks just to show he's better than Percy.
One possible plotline could be that Saber and Kagome both have feelings for the same character. Saber might become jealous of Kagome's relationship with this character, leading to some tense moments between them. Another could be that they are in a competition, and Kagome's success makes Saber jealous, which then affects their interactions.
One possible plot could be that Bentley and Penelope are both friends who develop feelings for the same person. For example, they might be in a group of friends and a new, charming individual joins them. Bentley starts to show interest in this new person by spending more time with them and giving them special gifts. Penelope then becomes jealous as she also has feelings for the new person. She might start to spread rumors about Bentley to make herself look better in the eyes of the new person. This could lead to a rift between Bentley and Penelope, and their friendship would be in jeopardy as they both struggle with their jealousy and feelings for the same individual.
I've also heard of 'Our Secret World'. This fanfic delves into the more private and unspoken moments between the two. It has a really nice flow to it, and the author uses great descriptions to make you feel like you're right there with Chaeyoung and Lisa, experiencing their relationship unfold.
Well, perhaps in a really out - there girl burping fanfic, there could be a magical world where burping is a sign of a special power. The girl discovers she has this power through her burping and has to learn to control it and use it for good. But again, this is a very strange and not very likely plot compared to more normal fanfic plots like saving the world from a villain or falling in love. The idea of basing a plot on burping is just not very mainstream.
One possible plot could be Asgore's struggle to hide his depression from his subjects while ruling his kingdom. He might put on a brave face during the day but break down in private.