Their relationship would likely become more tender. Natsu would probably be more protective of Cana, always making sure she's safe and comfortable. Cana, on the other hand, might rely on Natsu more for emotional support.
In the fanfiction, their relationship can be developed through mutual growth. Natsu could help Cana become more confident in her magic abilities, and Cana could teach Natsu some wisdom about life. As they see each other improve, they start to respect and admire each other more. This admiration can turn into love over time. For instance, Natsu could be there for Cana when she fails at a big magic spell, and his encouragement could be the turning point in their relationship.
In the 'natsu gets cana pregnant fanfiction', perhaps it starts with a magical accident. Natsu and Cana might be exposed to some strange magic that causes an unforeseen bond between them. As a result, Cana discovers she is pregnant. Then, they would have to face the reactions of their friends and the challenges that come with this new situation in their lives.
They would become closer. The shared experience of expecting a child would bring them a new level of intimacy. Natsu would be more protective of Lisanna.
They would become closer. The impending arrival of the baby would make them more reliant on each other.
In this fanfiction, Natsu could start to show a more mature and caring side towards Cana. He may become more attuned to her needs, like making sure she has proper food and rest. Cana, in turn, might grow in confidence as she prepares to be a mother. She could also become more assertive in protecting her unborn child from any potential threats in their magical world.
Well, at first, they might be a bit scared and it could put some strain on their relationship. But as they come to terms with it, they would grow closer. Natsu would be more protective of Lucy, and Lucy would be more patient with Natsu's sometimes reckless behavior. They would start to plan their future together, thinking about things like where they will live and how they will raise their child. Their relationship would transform from a more carefree one to a family - centered relationship.
Natsu would likely develop into a more responsible and caring character. His protective instincts would be on high alert. He'd probably become more serious about providing for Cana and the unborn baby. For example, he might take on more difficult and high - paying missions to save up for the future. Cana, she would become more nurturing. Her usually carefree attitude might change as she focuses on the well - being of the baby. She might also start to see Natsu in a new light, as a reliable partner for this new chapter in their lives.
One plot idea could be that they accidentally find out about the pregnancy. Natsu, being his usual impulsive self, is at first shocked but then becomes extremely protective. Cana, on the other hand, is a bit more hesitant as she's not sure how to handle this new situation while still being part of the guild. They could face challenges like dealing with the guild's reactions, some of which might be positive and some negative. And they have to prepare for the arrival of the baby together, which includes finding a proper place to live and getting the necessary supplies.
Their relationship would likely become more intimate and deeper. With a baby on the way, they'd have to rely on each other more. Natsu would probably become more gentle and caring towards Mirajane, and Mirajane would feel more protected by Natsu.
One idea could be that they discover their pregnancy during an important mission. This would add a layer of complexity as they have to balance their new situation with their duties. They might have to face the reactions of their friends in the guild, some being overjoyed and others worried. Another plot could involve them preparing for the baby's arrival, like Natsu trying to build a nursery with his unique brand of enthusiasm but making comical mistakes along the way.