Fanfiction about Kou and Futaba with a jealous theme: What could be the possible plotlines?

One possible plotline could be that a new character enters the scene, perhaps a powerful and attractive superhero or agent. Captain America starts showing interest in this new person in a friendly way, but Black Widow misinterprets it as something more. She becomes jealous and starts acting cold towards Cap. Meanwhile, Cap is oblivious to her jealousy at first. As the story progresses, they have to work together on a mission and gradually realize their true feelings for each other through various challenges and misunderstandings.

The jealousy can be resolved through communication. If Kou is jealous, he could simply talk to Futaba about his feelings. For example, he could say 'I saw you with that other guy and it made me feel uneasy.' And Futaba could then explain the situation. The same goes if Futaba is the jealous one.

One possible plotline could be that Marco gets a new friend or a love interest and Star starts to feel left out, leading to her jealousy. Another could be that Marco achieves something that Star has been striving for and her envy turns into jealousy.

Yes, there might be. You can try searching on fanfiction platforms like Archive of Our Own. They usually have a wide range of fanfictions, and there could be ones about kou and futaba sharing a kiss.

This kind of fanfiction can be controversial. On one hand, fanfiction is about creativity and exploring different storylines. If the 'Kou and Futaba pregnant fanfiction' is written with a focus on character development, relationship exploration, and is set in a fictional world that respects the essence of the original characters, it could be seen as a valid form of creative expression. But on the other hand, pregnancy is a sensitive topic, and if it's not dealt with carefully, it can be seen as disrespectful to the characters or the fans who have certain expectations of them.

Kou and Futaba don't kiss in the manga. The focus of the story might be on other aspects of their relationship rather than a kiss.

Maybe there's a situation where Momo and Shouto get lost during a school trip. They have to rely on each other to survive in the wild. The lemon part could come in as they share body heat during a cold night, snuggling close together. Their relationship could then progress from friendship to something more romantic as they start to realize their feelings for each other in this intense situation.

Archive of Our Own is a great place to start. It has a large collection of fanfictions from different fandoms.

Well, it depends on how you interpret the story. Some might say they do, as there are hints and developments that suggest a romantic connection. But it's not a straightforward and obvious ending.

Perhaps in the fanfiction, Percy has a special connection with nature or the moon in a way that Artemis feels is encroaching on her domain. Like Percy discovers a new power related to the moon that no one expected, and Artemis, being protective of her lunar powers, becomes jealous. This could lead to a series of challenges and confrontations between them as Artemis tries to reassert her dominance over her own areas of influence.