One great example could be a fanfiction where Snape overcomes his long - held grudges against Sirius in a life - or - death situation. Maybe Sirius is framed again, and Snape, having discovered the truth through his own investigations, steps in to save him. This could involve a complex plot where Snape has to fight against his own pride and the expectations of others in the wizarding world.
In some fanfictions, it might be a situation where Sirius is in danger from dark wizards. Snape, who has a deep understanding of the dark arts, uses his knowledge to outwit the attackers and save Sirius. It could also be a story where Snape's actions are not just about saving Sirius physically, but also about redeeming his own past actions towards Sirius and the entire Marauders group.
One great example could be a story where James discovers a plot against Snape that no one else is aware of. He then uses his skills and Gryffindor courage to protect Snape from the impending danger. This could involve him facing off against some dark wizards who have a vendetta against Snape.
There's a fanfic called 'Snape's Hidden Heroism for Lily'. In this story, Snape discovers a plot against Lily early on and starts devising ways to keep her out of harm's way. He sacrifices his position among the Death Eaters and risks his own life in the process. Another interesting one is 'When Snape Saved Lily'. It details a scenario where Snape has to fight his former friends to rescue Lily from a deadly trap.
In some fanfictions, Naruto saves Obito by first understanding the root of Obito's pain. Obito was driven to his actions because of the loss of Rin and his disillusionment with the ninja world. Naruto, having experienced his own share of losses, is able to empathize. He then uses his positive influence and unwavering belief in the goodness of people. For instance, he might show Obito the new, more united ninja world that he has been working towards. This gives Obito hope and makes him realize that there is still a chance for a better future, and thus he is saved.
In some fanfictions, Naruto saves Kakashi from the brink of death. For instance, Kakashi could be poisoned by a rare and deadly toxin. Naruto, with his determination, goes on a quest to find the antidote. He overcomes many obstacles, battles different creatures, and finally retrieves the antidote to save Kakashi. This showcases Naruto's loyalty and his growth as a shinobi.
In some fanfictions, Sakura is trapped in a genjutsu created by a rogue ninja. Naruto, with his strong willpower and ability to break genjutsu, manages to enter the illusory world and free her. There are also those where Sakura is in danger during a war, and Naruto, as the hero, uses his Nine - Tails chakra to shield her from harm and then defeats the opposing forces.
One great example could be a fanfiction where Naruto has to battle a powerful new enemy who has kidnapped Gaara. Naruto uses his new jutsu and his unwavering friendship to break through the enemy's defenses and save Gaara. Another might be a story set in an alternate universe where the circumstances of Gaara's capture are different, but Naruto still goes to great lengths, even sacrificing his own safety, to rescue Gaara.
There could be a fanfic where Elena is in danger from a group of werewolves. Klaus, having his own reasons for not wanting Elena to die, steps in. He uses his cunning and strength to fend off the werewolves. This could lead to a change in their relationship, with Elena starting to see Klaus in a different light, perhaps as more than just an enemy.
It can also impact the overall plot of the wizarding world. If Snape saves Sirius, it might change the way the Order of the Phoenix operates. Sirius could be more involved in the fight against Voldemort, having been saved by Snape. This would change the power dynamics within the order and potentially lead to different strategies in the battle against the dark side. Also, it might change how Harry views Snape and Sirius' relationship, which is a big part of his own growth in the story.
One good example could be a fanfiction where Snape saves Harry from a dark wizard's attack during the Triwizard Tournament. In this fic, Snape might have been secretly following Harry out of his sense of duty to protect him. Another could be a story where Snape saves Harry from a dangerous potion experiment gone wrong in the Potions classroom. He uses his extensive knowledge of potions to counteract the harmful effects.
One great example could be fanfictions where Snape uses his advanced potions knowledge in unique ways. For instance, he might create a new potion that can reverse the effects of a dark curse. Another example could be stories where he uses his Occlumency skills not just for defense but to outwit powerful dark wizards. He could enter their minds undetected and plant false memories or gather crucial intelligence.