One possible plot twist could be that Hermione discovers a hidden prophecy that only she can fulfill to save Snape. This prophecy might be related to some ancient magic that Snape has unknowingly become a part of. Another twist could be that in order to save Snape, Hermione has to team up with some of her former enemies, like Draco Malfoy, who also has a vested interest in Snape's survival for some reason. And perhaps the most unexpected twist could be that Snape's salvation is somehow linked to Hermione's ability to time - travel, which she uses to go back and change certain events that led to Snape's peril in the first place.
Well, it could be that Hermione saves Snape from a deadly curse, but in doing so, she accidentally transfers the curse onto herself. Then the story could focus on Snape trying to save Hermione in return. Or, there could be a plot twist where Hermione saves Snape, but it turns out that Snape was faking his endangerment as part of a bigger plan to expose some hidden enemies within Hogwarts. Also, it might be that Hermione saves Snape from a group of dark wizards, and as a result, she gains a new magical ability that was transferred to her from Snape during the rescue.
Perhaps Snape and Hermione were secretly working on a time - traveling potion project. Due to some unforeseen consequences of time manipulation, Hermione ended up pregnant. It could also be that a powerful magical artifact they were studying had some sort of fertility - enhancing effect that they didn't anticipate at first.
A common plot twist is that Snape saves James but at a great personal cost. Maybe he has to sacrifice his standing in the wizarding community or make a deal with a dark force. For instance, he might have to give up some of his valuable potions knowledge in exchange for James' life.
One possible plot twist could be that Snape reveals a long - hidden connection between Hermione and his own past. Maybe he knew her parents in a way she never expected. Another could be that he shares a secret about the Dark Arts that Hermione uses to turn the tide in a major battle against Voldemort. For example, he might disclose a weakness in a powerful dark spell that only he knew because of his past as a Death Eater and double agent.
Well, it could be that Hermione is in some sort of magical danger in the world of Harry Potter. Naruto, with his ninja skills and determination, somehow gets transported to that world. Maybe he uses his shadow clone jutsu to distract the dark wizards while he rescues Hermione from a dangerous spell or a dark creature.
A great plot twist could be that younger Snape actually has some knowledge of Hermione's time - traveling. Maybe he's been having strange dreams about the future and when he meets Hermione, he realizes she's part of it. This would completely change the power dynamic between them.
One possible plot twist could be that Snape initially resists the marriage law but then gradually falls in love with Hermione as they are forced to spend time together. He might start to see her in a new light, beyond just being a student. Another twist could be that Hermione uses her intelligence to find a loophole in the marriage law to get out of the marriage, but then realizes she actually has feelings for Snape and decides to stay.
Well, a plot twist could be that while Naruto is saving Hinata and Hanabi, he discovers a hidden power within Hinata that she didn't even know she had. Maybe it gets activated during the rescue and she actually helps Naruto in a way he didn't anticipate. And as for Hanabi, she could be the key to finding a secret passage or something that aids in their escape from the dangerous situation.
One possible plot twist could be that Naruto not only saves them physically but also manages to change their view on the world so much that they become allies with Konoha. For example, Naruto might show them the true meaning of friendship and loyalty, which makes them question their previous life of being mercenaries. This could lead to a whole new dynamic in the story where they use their skills for good instead of just for money or power.
One possible plot twist could be that Lily marries Snape out of a sense of duty. Maybe she discovers some long - hidden secret about Snape's past that makes her feel obligated to stand by him. For example, if she finds out that he made a great sacrifice for her family in the past that no one else knew about. Another plot twist could be that it's a marriage of convenience. The wizarding world is in danger, and their union is seen as a way to bring two powerful magical lineages together to fight against a common enemy. Or perhaps Snape has some unique magical ability that Lily needs in order to achieve a certain goal, and marriage is the only way to access it.
One way it could happen is if Hermione discovers a time - turning device in the Marauders' era. She might use her advanced knowledge to figure out that Snape is in danger. For example, she could know about some plot by the Marauders to prank Snape in a way that could turn deadly. She then steps in, using her magic skills and intelligence to prevent the harm. Maybe she creates a diversion or uses a protection spell to shield Snape.