Their relationship with the guild leaders could become strained. The leaders might see them as irresponsible for getting left back. However, as time passes, Lisanna and Natsu could prove themselves in other ways, like taking on extra tasks around the guild to show their dedication. This could gradually change the leaders' perception of them and strengthen their relationship in the long run.
With their peers who also got left back, they could form a closer bond. They would share the experience of having to repeat and would work together to improve. They might also develop a bit of an underdog mentality and work hard to show that just because they were left back doesn't mean they are less capable. This newfound camaraderie could be an important part of their growth in the fanfiction.
The main characters are clearly Natsu and Lisanna. Natsu is a well - known character with his fiery personality and powerful dragon - slayer magic. Lisanna is also important, she has her own set of skills and a unique relationship with Natsu.
Their relationship often develops through shared experiences. For example, they might go on a quest together. During the quest, they face challenges and have to rely on each other. This builds trust between them. Natsu might start to see Lisanna in a new light, not just as an old friend but as someone he could have deeper feelings for. Lisanna, on the other hand, might become more confident around Natsu and show her true self more often.
In this kind of fanfiction, they might face various challenges. Maybe they'll have to find their way back on their own. They could encounter dangerous magical creatures and have to rely on their own skills and the bond between them to survive.
Perhaps they get left back because of some external factors. Say, an enemy attacked their guild right before an important exam. Lisanna and Natsu were so busy fighting off the enemy and protecting their guildmates that they missed out on crucial study time. They might have also gotten injured during the battle, which further hindered their performance in the assessment, causing them to be held back.
Well, in many fanfictions, Natsu might initially be in shock. He's a passionate character, so he could react with anger. He might lash out at Lisanna or the person she cheated with. He could also go into a state of self - doubt, wondering what he did wrong.
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.
For the new generation of ninja like Boruto and his friends, they might view Sakura's overprotectiveness as strange. Boruto in particular, who has his own views on Naruto, might not understand why Sakura is so over the top in protecting Naruto. This could lead to some misunderstandings between the generations.
The kiss could change how the TARDIS reacts to them. Since the TARDIS has a sort of sentience, it might sense the change in their relationship and act differently. Maybe it becomes more protective of them or takes them to places that are more conducive to their relationship growth. And other characters like Jack Harkness might tease them about it, adding a new dynamic to their group interactions.
Natsu and Lisanna's relationship would deepen. Natsu would have a new sense of purpose in protecting his family. He might be less impulsive in his actions outside the home because he has a family to think about now. Lisanna would see a more tender side of Natsu as he interacts with their baby. They would also have to communicate more about parenting decisions, like how to discipline the child or which magic to teach the baby first.
Their relationship with Ron might be strained. Ron could feel abandoned and betrayed as he is left behind. He might initially be angry with them for leaving without him, but later come to understand their reasons.