In this fanfiction, it may be that the little demon girl is lost in the forest and Natsu stumbles upon her. At first, she might be scared or hostile towards him, but as time passes, they develop a bond. Natsu could then take it upon himself to help her find her way back to her own kind or a place she belongs, all while they encounter different challenges like dangerous spells or other unfriendly beings in the forest.
Natsu might be a powerful wizard with a big heart. The little demon girl could be an outcast among her kind, which is why she's alone in the forest. There could also be other side characters like Natsu's friends who might later get involved in the story when he tells them about the little demon girl.
Perhaps the little girl is a prodigy but is being bullied because of her abilities. Naruto discovers her crying in an alley. He comforts her and tells her his own story of being an outcast as a kid. He helps her gain confidence. They might start training together secretly. The little girl could then use her new - found confidence and skills to impress the other kids in the village, all while Naruto watches with pride.
The plot could involve Natasha taking the girl under her wing. Maybe she tries to protect the girl from those who would misuse her powers. She could train the girl to control her powers, like teaching her self - discipline and combat skills related to using her powers effectively.
Naruto would probably be very friendly and kind. He has a big heart, so he'd likely greet her with a big smile and start chatting right away, asking her name and where she's from.
Well, one possible plot twist could be that Natsu has been hiding her true gender to be able to participate in male - dominated activities like a certain guild or sport. Another could be that she's in love with a male character, but is afraid to reveal her gender in case it changes how he feels. Or perhaps she has a special power that is related to her being a girl secretly, like a unique form of magic that only female dragonslayers can possess.
One possible plot could be that Natsu, after being hit by a strange magic spell during a battle, turns into a girl. His friends are initially shocked but quickly adapt. Natsu, as a girl, discovers new aspects of his own personality. For example, he might find that he is more in touch with his emotions. He could also face some challenges like having to deal with different clothing styles and the way others now perceive him. As the story progresses, he tries to find a way to break the spell while still learning important lessons about himself and his relationships with others.
The plot could develop with Natsu and the girl initially in shock. Then they might start making plans for the future, like finding a place to live. Natsu could also try to earn more money for the upcoming baby. Their friends would likely get involved, some offering help and others maybe being a bit skeptical.
Natsu would likely become more responsible. Taking care of a baby is no easy feat, and he'd have to learn things like being gentle and patient, which are not his usual strong suits. This would be a big step in his character growth.
Natasha would likely be cautious at first. She has seen a lot in her life and new powers can be dangerous. But she would also be curious and protective.
It could be that the baby is related to someone from Natsu's past. When he finds the baby, he feels an instant connection. He then embarks on a journey to find out more about this connection, all while ensuring the baby's safety. Along the way, he might learn more about his own history and family through the baby.