The discovery can have a profound impact on the story. Since Mary has her own set of values and experiences from her time in the Supernatural world, her reaction to Jess can shape the relationships within the story. If she accepts Jess, it could lead to a more united front against the supernatural forces. However, if she doesn't, it could cause a rift not only between her and Dean but also among the group of characters as a whole. This new development can also attract new characters who are interested in either Mary's reaction or Jess's new position in the group.
Her discovery can bring new plotlines. Maybe Mary tries to keep Jess safe from the supernatural threats she knows about. This could involve her teaching Jess some self - defense or warning her about certain monsters. It also might make other characters reevaluate their relationships with Dean, as Mary's opinion often matters in the Supernatural world of the fanfiction.
It could change the power dynamics. If Harry finds a loophole in a powerful spell or a rule, he might become more of a threat to the Dark forces. For example, if he can use a spell in a new way due to the loophole, he can better defend against Voldemort's attacks.
With Edward, it can strengthen their bond. They might become even more protective of each other and start making plans for their future as a family.
The discovery could create a new arc in the plot where Harry has to learn to master the power of Merlin's wand. It might be difficult as the wand could have its own will.
The discovery might attract the attention of villains. They would want to either capture the baby phoenix for its powers or stop Harry from using it to his advantage. This would lead to more battles and challenges for Harry and his friends.
In the Supernatural fanfiction, if Mary finds out about Jess, she might be quite shocked. She could initially be confused as Jess is Dean's girlfriend and Mary has her own complex backstory. She may try to understand the relationship and how Jess fits into Dean's life, given her own experiences with love and loss in the Supernatural universe.
It could strengthen their trust. Since he's immortal, they might think he has a greater purpose for Camelot that he's committed to for a long time.
If Chelsea discovers a long - lost power that Sakura has, it could lead to a power - up for Sakura. This would then shift the balance in any battles or challenges she faces in the fanfic. For example, if the discovery is made during a fight with a powerful card - created monster, Sakura could use this new power to defeat it and save the day. This would also change the relationships between the characters as they see Sakura in a new light.
The discovery could also introduce new elements to the story. Maybe Naruto has to learn how to use the wizard - like powers of the weapon, which would involve him traveling to different places or meeting new characters from the wizarding world. This could lead to a whole new arc in the story where Naruto is not just fighting ninjas but also dealing with wizards and their magic.
It can make the plot more focused on recovery and justice. The story could revolve around Harry getting the help he needs and the search for the abuser if not already known.
Another difference is that other Supernatural fanfictions might be more about filling in the gaps or expanding on the lore of the show. They could be about the backstories of minor characters or exploring different timelines. But Mary Sue fanfiction is mainly about this one - dimensional, overly - perfect character. It's like the author is more interested in projecting their ideal self into the Supernatural universe rather than truly exploring the universe itself.