One of the most devastating Awful Truths a character can recieve.
"You caused the death of your friend/parent/mentor."
Often a Wham Line, there is no more reliable way to send a heroic character spiralling into grief than to reveal that they were responsible for the death of someone close to them. The surprise element is the important part here; the character has hitherto been living perfectly happily and innocently, completely oblivious to what they've done. Common consolations include telling the character that obviously, its not their fault if they weren't even aware of the damage they were causing, but this is often of little comfort to the stunned recipient.
- In Btooom!, Ryouta applies this trope to himself when he realizes Taira's death was largely because he seemingly ignored other people's thoughts and feelings, as well as doing whatever he wanted to do. As a result, his friend started going insane due to his injuries, which ultimately led him to attack both Ryouta and Himiko when he starts to hallucinate about his family and meeting them again.
- In episode 16 of Code Geass, Mao calls out Suzaku for the death of his own father, Genbu Kururugi.
- In episode 12, Shirley does this unintentionally when she tells Lelouch that her father died during the previous episode in a landslide which Lelouch (in his alter-ego Zero) triggered in order to gain an advantage against the Britannian forces. Made more painful to Lelouch when Shirley asks how the Black Knights can call themselves protectors of the innocent when they kill people like her father, who was always kind, loving, gentle man through and through.
- In episode 3 of Cross Ange, Ange gets this from her squadmates for getting her captain and two fellow new cadets killed.
- Though it wasn't intentionally directed at her, Claire Cruz in episode 4 of Toaru Hikuushi e no Koiuta is able to piece together the events that Kal-el tells her about his past to realize that as her alter ego, Nina Viento, she was indirectly responsible for causing the overthrow of his royal family during a rebellion a few years earlier, and subsequently their deaths. She's shocked enough by this to be uneasy around him for the rest of the episode, and partly into the next one as well.
- In Aldnoah.Zero, Wide-Eyed Idealist Asseylum Vers Allusia, crown princess of the Vers Empire of Mars, comes to Earth to promote reconciliation between the two planets. However, the royal convoy is bombed - by a Martian faction, no less - which the Orbital Knights of Mars immediately seize as cause for a devastating, planet-wide invasion. Asseylum, unbeknownst to both factions, survives the attempt, but is consumed by guilt.
- in the Emergency! fic Lost and Found, John's captor torments him this way. Roy was his original target, but John begged to be taken instead, to spare Roy. Roy is shot, but survives. However, John's captor lies and says Roy died and suffered and would have lived if not for John's actions.
- In Necessary To Win, this is said practically word for word by Teru, to Saki, regarding their adopted sibling, who perished in a tankery accident while Teru saved Saki. On the other hand, someone close to the speaker doubts whether she actually truly believes this.
- In Marie D. Suesse and the Mystery New Pirate Age!, Monkey D. Madelyn, by wishing for Luffy to be delayed in the race for Raftel so Trafalgar Law could become King of the Pirates, inadvertently sets off a series of events resulting in the deaths of all the Straw Hat Pirates and virtually all of the Heart Pirates. Toward the end of the fic, when Madelyn admits that she made "mistakes," Law angrily lays into her, listing the names of everyone who died because of her and saying that it's all her fault.
- In The Lion King, right after killing Mufasa, Scar tells Simba that he's responsible for Mufasa's "accidental" death. Much later, rescinding his lie was one of his last mistakes.
- They did it again in The Lion King 2: Simba's Pride. After watching Nuka try to climb an unstable log dam after Simba and subsequently fall to his death, Zira turns on Kovu, claws him across the eye, and snarls, "Nuka is dead because of you. [...] You've killed your own brother!"
- This happens in Frozen when Hans tells Elsa she killed her sister with the intent of getting her to cross the Despair Event Horizon so that he can finish her off. Anna's not dead yet at that point, but she does freeze to solid ice a few moments later as a result of the freezing curse Elsa (accidentally) put on her; she is then saved by the act of love she performs to save her sister.
- Not directly said, per se, but it seems in 28 Weeks Later that the kids realized that they were a tiny bit responsible for the events that tossed the big pile of fecal matter into the air circulation device, leading to the death of just about everybody but them.
- Star Wars: Revenge of the Sith:
Darth Vader: Where is Padme? Is she safe? Is she alright?
Darth Sideous: It seems in your anger, you killed her.
- In Memento, the main character eventually finds out from Tommy that his wife was a diabetic and that the story he made up about "Sammy Jenkis" killing his wife by giving her too much insulin was actually a self-protecting projection of what he did.
- Shutter Island: Leonardo DiCaprio's character's family is dead because he ignored his wife's mental illness and when she murdered his kids he killed her then "imagined" that he was looking for his family's real killer. It's implied this truth is so horrible that the second time he realized it he chose to get a lobotomy instead of living with what he's done.
- In the big battle scene in the middle of Kagemusha one of the retainers points at a number of corpses of young Takeda samurai and tells Kagemusha (impersonating Shingen Takeda): "These men died to defend you."
- Into the Storm (2014): Allison blames Pete for Jacob's death. Though Daryl blames himself because he talked Jacob into staying.
- The Adventures of Pinocchio: The Fairy somehow wrote in a tombstone that she died of pain after being abandoned by Pinocchio in order to guilt-trip him.
- Harry Potter pulls this a number of different times.
- It happens twice regarding Harry's parents; first when Harry discovers that Peter Pettigrew sold them out and second when he learns that Snape told Voldemort about the prophecy in the first place, not counting when Harry yells it at Sirius falsely believing him to be the traitor.
- When Sirius is killed Harry blames himself for causing Sirius to put himself in danger and not listening to Hermione and forgetting Snape, Dumbledore for not explaining stuff to Harry and keeping Sirius cooped up, Snape for not being especially helpful and mocking Sirius about being useless, and Kreacher for locking Sirius in his room and lying.
- At the end of the series, Harry blames himself for everybody's deaths as they did, essentially, die in his name.
- Attempted by Rose in Doctor Who against the titular Dalek. Doesn't work, because, well, it's a Dalek.
Rose: They're all dead because of you!Dalek: THEY ARE DEAD BECAUSE OF US!
- On The 100 Clarke is very troubled to learn that Finn massacred a village because he was trying to find her, and that said massacre will likely lead to his execution. She feels so responsible that she tries offering herself up to be killed in his place.
Lexa: But Finn is guilty.Clarke: No! He did it for me. (almost sobbing) He did it for me.Lexa: Then he dies for you.
- Daredevil (2015):
Karen Page: They killed him...because of me.
- Karen Page's crusade in season 1 to expose Wilson Fisk is in part because she blames herself for the death of Daniel Fisher, the Union Allied coworker that Fisk tried to have her framed up for. While Karen's guilt is somewhat alleviated by learning from Fisher's widow that he had been planning on blowing the whistle on the same stuff Karen had been about to expose, she is motivated further.
- After an attempted poisoning of Vanessa, Fisk feels that her simply being near him is the reason she ended up that way. Wesley has to reassure him that this isn't the case.
- The Punisher (2017): William Rawlins and Billy Russo give variants of this to Frank Castle concerning the death of his family.
- In Phoenix Wright: Ace Attorney, Miles Edgeworth believes that he (accidentally) killed his father, Gregory Edgeworth, by throwing a gun that went off and hit him. When his former mentor, Manfred von Karma, decides to get rid of him by framing him for murder, he times it near the anniversary of that incident to reopen Edgeworth's emotional wounds, hoping he'll confess to it. (It works — and then spectacularly backfires on von Karma, who was the real murderer).
- In the third case of the second game, a variant of this happens when Regina is forced to face the fact that her Deadly Prank was why Bat went into a coma.
- In Trials and Tribulations, Godot tells Phoenix that he was responsible for Mia Fey's death, and that he himself could have prevented it.
- In Dual Destinies, Edgeworth himself suggests that Athena Cykes could have accidentally killed her mother. It's left somewhat ambiguous whether he himself believed it to be true or just figured someone had to be brave enough to put it on the table for Phoenix and co. to disprove.
- In Dragon Age II, Merrill's Act III personal quest ends with this. Anders and Fenris remind her cruelly of this.
- In Final Fantasy II, if you go back to Altair and speak to Hilda after getting Gordon in your party the first time, there is special dialogue between the two, where Hilda is infuriated with Gordon, saying that his cowardice caused Josef's death. To elaborate, they needed to get inside Kasuon Keep for a special torch, and the only way of entrance is either with a certain bell or the voice of a member of the royal family. On the mission to get the bell, the party encounters Borghen on the way out, and Josef pulls a Heroic Sacrifice to save them from a boulder trap; the implication is that this all could have been avoided if Gordon had helped them.
- Certain game-over conditions in Night Trap cause the Mission Control commander to blame the player for the deaths of the heroine and the other victims.
- In certain missions during the various Call of Duty games, especially the ones that rely heavily on stealth, if you attract unwanted attention, say by shooting at a platoon of enemy soldiers instead of letting them pass you by undetected, you'll probably get a Non-Standard Game Over, either by you getting killed by the overwhelming firepower, or your ally gets killed in the event you somehow manage to outfight/outrun them. The game makes sure to tell you caused their death.
- In Super Danganronpa 2, Saionji tells Kuzuryuu that because he played the game that was Monokuma's "motive," he caused the deaths of Saionji's best friend, and Kuzuryuu's childhood friend and bodyguard; the latter killed the former while believing herself to be carrying out his will, and was executed for it. Kuzuryuu agrees, then attempts Seppuku as penance.
- In Warcraft III, Furion says this to Illidan: "At no heed to the cost? Because of you, Tyrande is dead!" (Kael informs them a few seconds later that they Never Found the Body.)
- In Sickness, If Sara is killed in your route, Suoh's Sickness will make sure to remind him that it was him that left her all alone while he was out trying to have fun with Misa.
- Gunnerkrigg Court: Delivered as the Wham Line to a devastating, defensive rant by Rey to Annie about why Annie's mother Surma died and no Psychopomp came for her: as an Uneven Hybrid with a fire elemental, Surma's spirit slowly transferred into Annie after her birth, until there was "nothing left to take" to the afterlife. Since everyone except Annie knew that this would happen when Surma had a child, it's more accurate that Surma died as a direct consequence of her own informed actions, but Annie is not in a position to appreciate the nuance.
- In Universal Compass, Two's sadness parallel tells her she died because Two died. This trope has the potential to happen to every character because the empty parallel and emotional parallel's lives are linked.
- In The Order of the Stick, the vampire possessing Durkon's body taunts Roy with the memory of his baby brother's death as part of a Mind Rape-enhanced Breaking Speech, telling him to give up because he always fails the people he tries to protect. Instead, it alerts Roy that the vampire isn't really Durkon and gives him the Unstoppable Rage to deliver a beatdown.
"I was... ten years old..."
- Though never told outright, the titular character of Steven Universe fears that the Crystal Gems hold the death of his mother and their leader Rose Quartz against him, since she sacrificed her physical form to give birth to him.
- From the end of Episode XCVI to the end of Episode XCVII, Samurai Jack believes he is responsible for the death of mind-controlled alien children. The Omen even lampshades this trope to try to get Jack to commit seppuku. The trope is subverted in both ways in that the children are alive and Ashi tells Jack so.
- BoJack Horseman: BoJack is actually the first to blame himself for the death of Sarah Lynn after encouraging her to go on a six week long bender with him. He shares how big the funeral was and how everyone was thinking that it was bound to happen, "but it wasn't." However, in season five, he begins playing the victim in many situations. Diane calls him out, possibly acting as the show-writers Leaning on the Fourth Wall to make the viewers realize his actions have been inexcusable. She goes on a long rant about how he's begun painting himself as the "main character of the Sarah Lynn story" which visibly hurts him.