When it comes to a character's Backstory, there is usually one event that stands out among all the rest and made the character what they are. They watched their parents die. They killed someone... or failed to. They let someone down. They ran away from something. This event will surely be the core of their Dark and Troubled Past, something that they have been spending the rest of their life coping with, living in the shadow of, accepting, or just trying to put out of memory...
Simply put, backstory is a theme. And themes need resolutions. Thanks to the Law of Conservation of Detail, you can probably bet that the resolution to a character's backstory will involve them facing the exact same or similar event that haunted their past, allowing them to conquer their demons once and for all... or die by them. Such an event is guaranteed to be a climax of some sort and is often highly cathartic.
History tends to repeat itself in the following ways:
- Character finds themselves faced with the same decision as before. They'll either make the right decision this time or fail the same way again.
- Character finds themselves faced with a danger, obstacle, or enemy from their past, something they have a very strong, personal grudge against. If they failed the first time, or perhaps succeeded out of pure luck, they'll be able to stand up to it with their own skill this time... or fail again.
- Character finds themselves faced with the same type of tragedy from their past. This time, they'll be emotionally mature enough to handle it.
- Character sees someone else going through the same series of events they did. They'll have a chance to help... or use it against them.
Note that a simple Chekhov's Gun cannot qualify. It's also not a realization, symbolic or otherwise, that they've failed or accomplished some life's goal or made some dead person happy. This needs to be a full-blown parallelism between what happened before the story started and what happened during the story.
- Juri in Revolutionary Girl Utena has in her backstory been in a romantic triangle with Shiori and another nameless boy from the duelling club. The boy was interested in her, Juri was in love with Shiori, and Shiori was uninterested in the boy but interested in hurting Juri and so convinced the boy to go out with her instead. During the Akio Ohtori Arc, Ruka, the former captain of the Duelist club appears and starts going out with Shiori, although he's really interested in Juri and is trying to make Juri forget her infatuation with Shiori.
- Daphne in the Brilliant Blue ends with Maia applying for the Oceans Academy again, like in the first episode (in which she failed)... Or does it?
- For some students of the Afterlife High School in Angel Beats!, one of the reasons you are there is to repeat your life's story, and making the right choice this time around. That, or simply having a good enough time.
- In Fullmetal Alchemist, Scar starts out a member of an oppressed ethnic group, the Ishvalans, wanting revenge on those who nearly wiped out his people, namely Amestris. By the end of the story, he plays an instrumental role in saving Amestris...from the same cabal that manipulated Amestris into its war with Ishval.
- In Yu-Gi-Oh! 5D's, Jack Atlas and Dragan fought a turbo duel that the latter was forced to throw in order to save his father's life. Years later, when they fought another duel, they both drew the exact same cards they had drawn last time. Both realized that Fate itself wanted them to replay the duel to see who should've won.
- Sword Art Online: during the Gun Gale Online arc, Kirito is faced with a player who had survived being trapped in SAO with him who was a member of a player-killer guild, who is now killing players in the real world from within GGO.
- Aruosumente has an intergenerational example. Oracle Kian had to die because he got too involved with matters of the military, after which a rule was established that the Oracle may not have any connections to the military. His son Legna's quest to find the source of the killing intent he dreamed of, however, forces him to investigate more than the Senate would ever approve, and he becomes friends with Lante the commander of the White Knights threatening him to unwittingly repeat what his father did.
- Following the Eclipse in Berserk, Guts went on a two-year-long vendetta against Griffith, his ex-commander who condemned him and every one of his comrades to die at the hands of ravening monsters from hell, and drove his lover Casca to insanity in one of the most horrible ways possible as his first act upon becoming a demon god. But in so doing, he left Casca behind, a decision that would cost him dearly. When Guts learns how he fucked up in leaving her behind, he goes through hell and high water to save her, a situation made even more complicated by an event similar to the Eclipse going down, culminating in Griffith's rebirth into the mortal realm. With his chance for vengeance finally at hand, Guts is only stopped by Casca as he realizes that he has to choose, once again, between his hatred and his love. He chooses his love.
- Batman: Bruce seeing Dick Grayson have to watch as his parents are murdered in front of him like what happened to Bruce many years before means that Bruce takes an interest in the new orphan's well being. When Gotham's Department of Child Disservices utterly fails Dick he takes him in to try and provide a family for someone whose pain he's in a unique position to understand, in the hopes that he can help Dick cope in a more healthy manner than he himself did.
- One Spider-Man story has MJ tossed off a bridge, exactly the way Gwen Stacy was. Spidey performs the equivalent of More Dakka with his webslingers to ensure the shock is distributed over her body and not just her neck.
- A backstory told during Hope for the Heartless reveals that Avalina's currently in the same situation with the Horned King as she was four years earlier with her Cool Horse Mitternacht, even if she's unaware of it. The girl alone could see that the furious horse everyone believed to be a lost cause was just acting out of grief from losing his rider, and she had to tame him before a time limit was up and he'd be put down. The dreaded Horned King has a time limit to complete his only chance to earn his freedom from the Black Cauldron, and Avalina slowly comes to make them both realize how lonely he is. Also, Avalina met both Mitternacht and the Horned King after being lost, goes through physical and emotional pain before she gets through to them (a task no one quite believes to be possible) and has her musical talents as an asset.
- In Fractured Fates, Kaneki failed to save her younger sister, Yuna, from getting accidentally dying in an incident that Kaneki herself was indirectly for. Several years later, she befriends her classmate Asuna Izumi during the killing, becoming something of a surrogate big sister towards her to try and make up for what happened to Yuna. Then, in Chapter 2, Kaneki finds out that Asuna is most likely being targeted for murder. This time, Kaneki vows that "it'll be different this time" and that she will do whatever it takes to prevent Asuna from dying as Yuna did. She ultimately succeeds but ends up murdered in Asuna's place.
- In Hook, Hook gets eaten by the (apparently not dead) crocodile that bit his hand off.
- Top Gun: The main character's co-pilot is killed in a freak accident after their plane stalls because they flew through another plane's "jet wash." In the final battle, the same thing happens, with a number of implications played out (Maverick keeps his plane in the air this time, but loses his nerve, and starts to flee before having an Underdog Comeback moment and saving the day).
- In Kung Fu Panda, Master Shifu fights a rematch against Tai Lung, his old apprentice-turned-evil, but loses again.
- You could also say Tai Lung's story repeats itself too — after being denied the Dragon Scroll, he is defeated, paralyzed, and imprisoned; twenty years later he escapes, tries to claim it again, and is again defeated, even when he attempts to use on Po the same move which had defeated him the first time.
- Perhaps, more importantly, the parallels between Tai Lung's and Tigress' training, and Shifu's differing reactions.
- The entire Harry Potter series revolves around how Harry miraculously survived a death spell from Voldemort ( thanks to his mother sacrificing herself to protect him) and chronicles how he gets strong enough to finally face him in a rematch. Which he wins by being willing to sacrifice himself and miraculously surviving exactly the same spell.
- At the very beginning of Warchild, Jos is abducted by pirates and abused by their captain Falcone. He escapes. Much of the rest of the book is spent showing him coping with that experience and the difficulties he has in trusting people because of it. But you know Falcone will be showing up again. Sure enough, in the climax, he captures Jos yet again and repeats the same pattern of abuse. And this time Jos can't even repress the memory. Unusually, Jos isn't able to face his demon or die by them. He's rescued. Not that it stops him from killing Falcone the third time they meet when it's Falcone who's been captured.
- The Star Trek: The Original Series episode "Obsession", where Captain Kirk couldn't save people from a monster.
- Birds of Prey did it with Black Canary, recreating her traumatic kidnapping in order to allow her to come out ahead and prove to herself that she was stronger. Or something.
- This is often used in Highlander: The Series. In the past, an Immortal enemy killed someone Duncan cared about. In the present, Duncan must face him again and this time stop him from killing Duncan's friends and/or lover.
- This is used in Teen Wolf. Derek has first-hand experience and reasoning as to why he thinks Scott shouldn't date an Argent.
- The Metal Gear series deserves its own section.
- Metal Gear Solid: Snake's inability to kill Fox to ensure an easy victory, because he had learned from his mistakes of killing Fox and Big Boss in Metal Gear 2: Solid Snake.
- The non-canon Metal Gear: Ghost Babel: Snake retires after the adventure in Outer Heaven back in Metal Gear. He comes out of retirement to deal with another Metal Gear threat in Galuade, a fortress built over the remains of Outer Heaven.
- Metal Gear Solid 2: Sons of Liberty: Subtle one. Otacon loses his father - and almost his sister - due to a drowning suicide by the former. If he had been there, he would have been able to save them - but he was in his room having sex with his stepmother at the time, and therefore didn't respond to his sister's cries for help. At the end of the Tanker chapter, Snake calls for Otacon to save him from drowning. This time Otacon saves him by riding a boat out onto the sea in a thunderstorm, nearly getting pulled down himself with the sinking tanker, just to pull him out of the water.
- Metal Gear Solid: Portable Ops: Big Boss assassinated The Boss, but, when his old friend Python begs for him to finish him off the same way he did The Boss, he tries to save him instead.
- Metal Gear Solid 4: Guns of the Patriots: Naomi dies in similar circumstances to Sniper Wolf (even the music is the same), and Otacon is overwhelmed. However, instead of grieving, he quotes the line Snake uttered after Wolf's death ("I don't have any tears left to shed"), and shakily gets on with life.
- Devil May Cry: Dante - who lost his mother as a child - nearly lost Trish as well, who basically is a demonic clone of her.
- Shadow from Sonic Adventure 2 is shocked into realizing his past after Amy Rose coincidentally uses the same phrase that the late Maria Robotnik did, and thus decides that, to make it up to Maria for the damage he's done, he'll stop the Space Colony ARK from hitting the Earth.
- Though it probably wasn't real, Shadow the Hedgehog featured a level where Shadow could have the choice to stop the G.U.N. soldiers from killing Maria.
- Archer's backstory in Fate/stay night works this way, putting him in his current position at the game's beginning. As a human, Archer when he was called Shirou was unable to save people from a disaster, which eventually led to his making a contract with the world to prevent the same thing happening in his adulthood.
- In Blaze Union, Gulcasa loses a number of people important to him through death and betrayal. He blames this on his own personal weakness (although every circumstance was pretty much out of his control) and vows to gain the power that he needs to really protect his loved ones. Three years later, another large-scale conflict starts; whether or not Gulcasa is capable of protecting his allies depends entirely on whether you're playing Yggdra Union (he can't) or Yggdra Unison (he does).
- Tatsuya Suou's history in Persona 2. He pretty much threw the weight of the world on his shoulders and tasked himself to destroy Nyarlathotep's plans before they started so his friends wouldn't have to suffer. He failed.
- In Disgaea: Hour of Darkness, the Heroic Sacrifice is a recurring theme for Laharl's character. Part of his reason for hating love was that his mother, who tried to instill such ideals, sacrificed her life to cure Laharl of an incurable disease. This would later repeat itself at the end of the game where Flonne offers herself up to be punished by the Seraph so that Laharl and the others would be spared. Then, after defeating the Seraph, Laharl attempts to sacrifice his life to bring Flonne back to life, though whether he does so or not depends on the ending the player receivednote .
- And it continues to bite Laharl in Disgaea Dimension 2. Sicily tries to give up her life in exchange for the kidnapped angels, but Laharl talks her out of it. He even comments that she's just like their mother. If the player receives a certain ending, though, Sicily chooses to sacrifice her life despite Laharl desperately pleading her not to.
- In The Last of Us (which provides the trope image), a Zombie Apocalypse breaks out and Joel has to carry his daughter to safety through a hostile environment. At the end of the game (20 years later), he ends up having to carry his surrogate daughter to safety through a hostile environment.
- An interesting variant happens in inFAMOUS. Cole McGrath gets superpowers. Later, he married the love of his life, Trish, and they had two daughters. Then the beast came, destroyed absolutely everything (and killed Cole's family), and Cole went back in time, gave Cole McGrath superpowers, and killed Trish to make sure Cole wouldn't make the same mistake he did.
- Ace Combat
- Early in Ace Combat 5: The Unsung War, Nagase is almost shot down by a Yuktobanian missile but saved when her flight lead Captain Bartlett takes the hit for her and crashes. Bartlett isn't found, dead or alive, for much of the rest of the game, and the whole event weighs heavily on Nagase's conscience. A few months later, Nagase is finally shot down under similar circumstances, with no one to take the missile for her, but survives and emerges from the ordeal a much better-adjusted individual.
- In a very meta way, the finale of Ace Combat: Assault Horizon calls back to a particular mission of The Unsung War, where Chopper cannot eject from his crashing plane due to burnt-out circuitry, as you can only helplessly watch him die. In Assault Horizon, Guts takes a missile for you (mirroring another wingman's actions in Ace Combat Zero: The Belkan War), but Bishop (the player character of ACAH), being an even more insane badass than Blaze (the AC5 PC), puts up a spectacular display of high-altitude marksmanship and snipes off Guts' malfunctioning canopy with his machinegun in mid-air, so he can bail out into the sea.
- Max Payne keeps getting in eerily familiar situations where his attempts to do the right thing result in deaths of his loved ones and himself barely surviving yet another chaotic killing spree. He lampshades it regularly himself, such as this quote from the second game:
"Like all the bad things in my life, it started with the death of a woman."
- In The Legend of Heroes: Trails of Cold Steel II, Crow Amrbrust dies in Rean's arms after Crow sacrifices himself to give Rean an opening to save the crown prince. Flash forward to Cold Steel IV and Crow is defeated again in his duel with Rean and is about to disappear for good when Rean decides he'll have none of it and demands that he live the life that he's been given, hugs him in his arms, and manages to send the energy Ordine was giving to Valimar, back to Ordine to make sure Crow lives.
- A Broken Winter: After failing to save his son's life, Kuroda is given the chance to save his best friend's son, Kokkan, which he does eventually. He then raises the child in his son's place, even going so far as to alter public records to keep Kokkan's true identity (wanted son of a terrorist) a secret.
- MAG ISA — the entire comic is all about the recurring theme of being alone. Both among the protagonists and antagonists.
- Avatar: The Last Airbender: Happened over and over again with Zuko. Most notably was his final showdown with his father where he was about to get burned once more, but instead deflected his father's lightning.
- My Little Pony: Friendship Is Magic: Princess Luna suffers from an unusually-literal version of this trope when she inflicts recurring nightmares on herself in which she turns into Nightmare Moon and defeats the Mane Six, just to remind herself never again to give way to the Nightmare.