Another possibility is that Rose's family could be the antagonists in a sense. If they are judgmental or unsupportive of her situation, they could create a lot of internal conflict for Rose. They might pressure her to make certain decisions she doesn't want to, like giving the baby up for adoption, which would add more drama to the story.
It could be Dimitri himself. Since he left Rose pregnant, his actions are causing a great deal of harm and conflict in Rose's life. He might continue to be a source of trouble, like trying to avoid any responsibility or interfering in Rose's attempts to move on.
One possible plot could be that Rose has to face the challenges of single motherhood. She might struggle with financial difficulties while also dealing with the emotional turmoil of Dimitri leaving. Maybe she'll find support from unexpected friends or family members and strive to build a good life for herself and the baby.
The main characters are Rose and Dimitri. Rose is likely to be a strong - willed and independent character. Dimitri is probably a protective and loyal character.
The main characters are clearly Rose and Dimitri. Rose is the one who is left pregnant, so she will be the central figure dealing with the consequences of the pregnancy. She will likely experience a range of emotions and challenges.
One plot idea could be that Rose and Dimitri face challenges from their families. Maybe Rose's family is worried about her being too young or not ready for motherhood. Dimitri's family might have different expectations for their future. Another idea is that they have to deal with the danger that still lurks around them while being pregnant, like threats from their enemies who see their unborn child as a target.
One common theme is the adjustment of their relationship. With a baby on the way, they have to redefine their roles as partners and future parents. For example, in many stories, Dimitri becomes more protective.
Another direction could be that Dimitri eventually finds out about the pregnancy and returns. There could be a lot of drama as they decide whether to get back together for the sake of the baby or if they should just co - parent. Maybe there are family and friend reactions to consider as well. For example, Rose's friends might be angry at Dimitri for leaving her in such a situation in the first place.
It could be a powerful underworld lord who doesn't want Naruto to leave. This lord might see Naruto as a threat to his rule in the underworld.
An ancient and powerful Pokémon with the ability to influence Pikachu's mind could be the antagonist. It might see Pikachu's potential and wants to use it for its own dark purposes. By making Pikachu leave Ash, it can start to manipulate Pikachu more easily.
The main antagonist could be a new character. For example, a powerful ninja from a rival village who has a vendetta against Konoha. This ninja could manipulate Naruto into leaving Konoha by spreading false rumors about the village. Then, he tries to use Naruto's power as an assassin for his own evil plans.
Maybe the main antagonist is a powerful figure within Konoha who doesn't want Naruto to leave and become an independent force. He secretly sends assassins after Naruto. When Temari gets involved, this figure also targets her. His actions are driven by his thirst for power and fear of Naruto's potential outside of Konoha's control.