Fanfic / Opposite Day

All spoilers for OMORI are unmarked. You have been warned.

Opposite Day is an OMORI fanfic made by OmegaFallon. It's an Alternate Universe where Hero was the one to witness Sunny's manslaughter of Mari. In spite of being a pariah, Sunny is an unusually upbeat boy, which carries into his dream universe, where he's a boy named Peki. In between dreaming the nights away, Sunny tries to cheer up an isolated Hero, who's moving towns soon.

This fic provides examples of:

• Accidental Murder: This is what Mari's death is believed to be by the residents of Faraway, being Sunny accidentally pushing her down the stairs.
• The Alcoholic: Sunny drinks vodka to cope with stress, something he learned from his mother. Peki drinks for fun.
• Adaptational Villainy: Mari is revealed to have sexually abused Sunny in this fic, though she is a Tragic Villain in that she realized the harm she had done by giving in to her darker impulses and committed suicide.
• Analog Horror: Stated as being a big inspiration for the fic's horror elements, Peki especially.
• Anchovies Are Abhorrent: To showcase just how truly off-the-deep-end he has gone, Sunny orders a pizza with anchovies and pineapple from Gino's.
• The Atoner:
  • To make up for traumatizing her little brother, as a spirit, Mari guides and encourages Sunny into being better than her, to not worship the "perfect" image he built of her, and to not follow The Chain of Harm and toxic coping tendencies of their family.
  • The still-alive Mari in the TRUTH alternate path reconciles with Sunny and tries to figure out how to be a proper sister to him.
• Big Eater: Peki has a voracious appetite for meat, especially raw. Though he relishes in his food, it comes out of necessity, as he is an undead creature whose existence defies nature.
• Body Horror: Peki is Mari's mangled, rotten, bloody corpse stuffed inside a shell of wooden and metal. He kills his friends in the dream world in a pretty gruesome way, too.
• Caring Gardener: Subverted. In this fic, Basil is anything but caring.
• The Chain of Harm: [[spoiler: In the KINDNESS and TRUST endings, Sunny refuses to have Hero and Mari punished under the belief that doing so perpetuates more harm in the future, rationalizing Mari's abuse of him to their mother's physical abuse of the father and the father's former drinking problems.]
• Cop Hater: Peki (and Sunny by extension) despises cops, to the point that a frequent tactic for Peki in Headspace is to taunt his friends about being “Fun Police” to get them to do stuff and at one point caused a frenzied riot/party chanting “FUCK THE POLICE”. This understandably caused by Sunny trying to report Mari raping him in the past and being waved off due to lack of on-hand evidence.
• Creepy Child: Sunny is regarded as this, due to his lack of boundaries and Dissonant Serenity. His dream self Peki is this even moreso, being a more exaggerated version of his persona.
• Cruel and Unusual Death: Peki is a rather violent person. He kills a few people across his journey through Headspace, but his most gruesome victims are his own friends, whom he kill right before entering Black Space.
• Driven to Suicide: It turns out that Mari had actually killed herself and it was framed up as an accidental murder, since the circumstances why she did so would paint her as a monster.
• Evil Brit: Though neither Peki nor his creator Sunny are British whatsoever, they both speak in a lavish imitation of a British accent.
• Foreshadowing: Too many to name. One prevalent example is when Sunny pushes Mikhael against the wall and kisses him, just as Mari used to do with him.
• For Want Of A Nail: Characters have their roles switched around. Hero is the photographer that witnessed Sunny's fight with Mari, Hero and Kel are the ones leaving town, Basil became the bully, etc.
• Failure Is the Only Option: Despite Sunny’s (and Peki’s) insistence that the truth stays buried and the lie that he killed Mari be in its place, in all three endings the truth that Mari raped Sunny, killed herself out of guilt, and Hero scapegoated Sunny with the canon stairs incident will inevitably come out either due to Sunny revealing everything himself or the eventual discovery of Mari’s hidden suicide letter. All that changed is how many people die by the time it's revealed.
• Freudian Excuse: Sunny's more less pleasant aspects stems from him rationalizing Mari's molestation of him to be "perfect."
• Hated by All: In spite of his delusional beliefs that he's well-liked, Sunny is openly despised by most of his town.
• I Am a Monster: Fairly justified in Mari's case, considering she did seriously hurt Sunny. After she lives through her suicide in the TRUTH path, she's described by Sunny as someone who believes everything they touch will turn to ash.
• Internal Reveal: Half played straight, half subverted. From the beginning of the story, the fact that Mari killed herself is known to the reader, but not to anyone in the story other than Hero. Thus, most of the story is spent waiting for Sunny to inevitably remember what happened on that day. While this does happen, this same sequence also reveals the further layer of Mari's abuse of Sunny, which was known neither to Sunny or the reader.
• Karma Houdini: In the TRUTH ending, Mari, despite the sheer number of lives she damaged by molesting her brother, doesn't face any jail time and is free to return to her family. She is far from happy about it.
• Karmic Death: In the VENGENCE and COWARDICE-KEEP endings, Sunny ends up killing Hero in revenge or insanity respectively. Considering Hero is the reason (beyond Mari’s earlier torment) Sunny got that bad in the first place (since the lie meant that he couldn’t get help), it certainly makes sense.
• Killer Robot: Peki is an example of this, appearing as a wooden-mechanical boy. This becomes even more obvious considering that the character was inspired by Bon from The Walten Files.
• Meaningful Name: Peki's name is derived from "kanpeki", a Japanese word roughly analogous to "perfect". Peki is effectively Sunny's denial of what Mari did to him given form, with him blindly idolising her and believing she did nothing wrong.
• Multiple Endings: Unusually for a fanfic, this one has multiple endings to mimic the ones in the canon game - including one that's an Alternate Universe where Mari fell into a coma instead of dying. There are three different endings with varying levels of angst involved.
  • Forgiveness: Sunny decides to forgive Peki after their Battle in the Center of the Mind and let him fade away into his subconscious, and accepts what happened to him before spilling the beans on the truth of Mari’s death.
  • Vengeance: Unlike the above, Sunny kills Peki after their duel and decides to kill Hero in revenge for ruining his life and throws the two of them off the Hospital roof. Posthumously it's revealed through Mari’s suicide letter, the truth about her death, and the town subsequently has to cope. (Equivalent to the Bad Ending)
  • Cowardice: After Sunny learns the truth he chooses NOT to confront Hero and decides to succumb to his trauma and SOMETHING. Later on, he attempts to (depending on if he discarded or kept the vodka bottle right before this) either rape or murder Hero and gets locked up in an asylum. He does however get professional help for his issues and gets exonerated by Mari’s note later with the implication that he might start healing in the future.
• My God, What Have I Done?:
  • Mari is revealed to have committed suicide out of guilt for having molested Sunny.
  • A townwide one in the VENGEANCE ending path, when it's posthumously revealed that Sunny was undeserving of being treated as a pariah.
• Pineapple Ruins Pizza: Sunny's pizza has the more contemporarily-despised pineapple as well as anchovies.
• Polyamory: The end of the story pushes a relationship between Sunny, Basil and Aubrey.
• Rape as Drama: The truth in this universe is that Sunny was actually being molested by his sister, and how he acts in the present day is a result of him rationalizing it as okay.
• Shield Bash: Peki's weapon is a golden shield, whose parallel in Faraway is Sunny's hand mirror. At first, its used for attacks that way, until Peki starts to use the shield's jagged part to violently chop people he's displeased with — mainly his own friends.
• Shout-Out:
  • Sunny's realization of the truth after waking up is set to "Streets of Cairo", an homage to Martin Walls' The Mysterious House.
  • One of the endings samples a part of Hands (OMORI).
• Shut Up, Hannibal!:
  • Peki, after failing to bribe Sunny away from breaking the lightbulb with affable offers, tries to dissuade him by warning him he will see something horrific that he won't be able to handle since he's imperfect. Sunny responds to the claim and starts his journey to discover the truth by throwing and breaking the lightbulb right on Peki's face while he's talking. When Sunny meets Peki again to fight him for control of his own mind, Peki still has the scars on his face.
  • The battle between Sunny and Peki is also a a huge example, with Sunny starting off meek and unheard about it, but gradually growing capable of verbally fighting back against Peki's claims of his and Mari's perfectness by saying the facts he doesn't want to accept: Mari is not perfect, and she traumatized him.
• Song Fic: The KINDNESS ending is set to a mashup of Mr. Brightside and Haven't Met You Yet, the VENGEANCE ending is set to Mr. Blue Sky, the COWARDICE ending is set to Tainted Love, and finally, the overall ending of the fic is set to What Is Love.
• Stepford Smiler: Sunny is unusually happy, but as the story goes on, it becomes clear that he's not actually happy; Basil flat-out has a Heroic BSoD when he realizes that Sunny isn't actually remorseless. He straight up drops the act after the truth is revealed, after reconciling with his trauma.
• A Storm Is Coming: As the story progresses, Headspace is gradually overtaken by a violent storm.
• Took a Level in Jerkass: This universe's version of Basil ironically takes the same role as Aubrey did in the original game, bullying Sunny because of Sunny's apparent murder and attitude.
• Took a Level in Kindness: Ironically, this universe's version of Aubrey is much kinder, having mellowed out from living under her father and is more forgiving toward Sunny's actions.
• Tragic Villain: Mari felt enough guilt from what she did to Sunny that she killed herself. Even in the ending in which she simply fell into a coma, Mari's guilt is immense and the focus of the ending.
• Unexplained Accent: Peki and Sunny (post-Incident) both speak in pseudo-British accents. Neither Sunny nor anyone he knows is British.
• Unreliable Narrator: Though the story is written in Second-Person Narration, we're limited to what Sunny sees and knows. Given his mental state, this isn't always accurate.
• Villainous Incest: Mari, the Tragic Villain of the story, raped Sunny, leading to the events of the story. Peki, in addition to representing all of Sunny's desire to justify Mari's actions, also frequently acts romantic with his version of Mari in Headspace.
• Vomit Indiscretion Shot: Sunny pukes (either for a long while or multiple times) after he remembers the Awful Truth about Mari and the memories start to flood him.
• Villainous RRoD: As Sunny keeps coming back no matter how many times Peki puts him down, Peki's body crumbles down (and his strength to keep on fighting follows suit) to the point that, by the time the choice of the KINDNESS and VENGEANCE endings is put up for the reader, its revealed it has the body of a teenage girl inside it.
• Villain with Good Publicity: Mari is revealed to have molested Sunny multiple times, which was covered up by Hero.
• Warts and All: A part of Sunny overcoming his trauma is learning that flawed does not necessarily mean bad.
• Wham Line: Four words in the story's final Black Space segment completely changes the perspective of the story and answers a lot of questions: Photo of a Rape
• World of Jerkass: Unlike canon!Headspace, which is mostly an exaggerated mashup of Sunny's memories extending to his friends having simpler personalities reflecting their childhood selves, the Headspace of this fic is much rougher, tough-looking, and lacking in sincere smiles, extending to its inhabitants and its versions of Sunny's friends, who are all rude brats mainly to each other. The most notable exception is Mari, who instead becomes meeker, softer, and constantly in need of Peki's comfort.
• Would Hurt a Child: In Headspace, Peki does many questionable things to his younger friends, including encouraging them to drink and making sexual comments. This culminates in him brutally murdering them. In the real world, Mari molested her younger brother Sunny.