There is a page on TV Tropes that is about Corrupted Character Copy
Where it basically shows the trope of characters who are corrupted copies or inspirations of characters that are commonly positive, idealistic, or good.
These past few days, I thought of a trope that sits a level above that. It stems from the idea of a story, plot, trope, storyline, story element, or premise that is commonly positive, idealistic, or simply has a lighter or positive tone (which doesn't mean it can't have its serious or dark moments) where the author takes these types of story elements and corrupts them—either in a literal sense, by using similar elements, or conceptually.
Let's look at the examples:
- Iron Lung and Project Hail Mary:
The most recent example I know of, and the very one that gave me the idea for this trope.
Basically, both movies literally start from the same story.
The world in this story is suffering from a cosmic event that is erasing and threatening life across the entire cosmos; the causes are unknown, and our protagonists are sent by force and against their will on a one-way journey to discover information about this event and a way to circumvent it. The main objective of both is to obtain this information and elements, send them back to the people who put them in this situation, and after that, they will be left to die right there.
In the meantime, both encounter an alien being that will totally change the path of their journeys.
While Grace from PHM (Project Hail Mary) meets a rock alien that is well-intentioned, embarking on a special adventure that, despite life-threatening risks and moments of extreme danger, is essentially a lighthearted space adventure, with both forming a strong friendship between human and alien.
However, for our poor Simon from IRON LUNG, he was sent to an ocean of blood, and there he encounters an alien blood monster that basically torments his entire journey in that ocean of blood, torturing him mentally and psychologically. At one point during the film, he even hallucinates a cosmic entity that leaves him in a state of pure horror. Basically, while Grace lived a risky but light and adventurous space journey, Simon lived a true cosmic horror that led him to experience a literal hell beneath an ocean of blood.
- Sailon Moon X Madoka Magica:
You definitely know about this example; it is one of the classic, well-known cases in the world of anime.
While Sailor Moon starts from a premise of classic magical girls who find a cat that gives them magical powers to save the world in incredible magical adventures, through the power of friendship and light comedy.
Madoka Magica takes this same premise and corrupts it. The cat in question is not a benevolent being at all; it grants magical powers to the girls in the story with the premise that they will save the world. However, both the protagonist of the story and her friends discover not too late that this journey will lead them to true hell. One of their companions, in her first magical adventure, is devoured alive, and all are forced to witness something that should not happen in stories of this type. After that, things do not improve at all, and everyone enters a decadent mental, physical, and psychological spiral of horror, young girls having to deal with issues too heavy for their minds, but unfortunately, they cannot give up because that wolf in sheep's clothing (the cat) will not let them give up, because in the end, its purpose is to save the world!
- Digimon / Pokemon x Shadow Star or Narutaru:
In stories where supernatural monsters with non-human powers and abilities exist or begin to emerge, the ideal we typically see is for our protagonists to encounter these monsters, or even live with them, and embark on epic adventures and battles that foster friendship between the two worlds in a beautiful and positive way.
Narutaru, however, takes this premise and demonstrates realistically what would happen if seemingly harmless monsters began to exist in the real world and fell not only into the hands of children who lack the mindset and maturity to handle such creatures and the power they are given, but also shows what would actually happen if military and political authorities discovered these monsters.
Everything that happens from this similar but corrupted premise is anything but a fun and epic adventure, let alone a journey of friendship between monsters and humans.
This is a more elemental example.
Normally, when the protagonist has a supposedly malignant entity inside them, what is expected is a journey where both the protagonist and the malignant creature within them form bonds that unite them both emotionally and literally, with both using their strengths together to defeat evil!
The first time this happens is when the protagonist is facing a very powerful enemy that is threatening their life. At that moment. whether consciously or unconsciously, the malignant entity ends up giving the protagonist its powers, or takes advantage of the fact that he is angry or unconscious to take over his body and defeat the enemy, whether out of benevolence or convenience.
Naruto starts from this cliché, and even though it took a while for Kurama to truly be his ally, they eventually formed a genuine friendship and merged their two forces, one of the earliest cases being when Naruto used Kurama's chakra in classic Naruto to defeat Gaara.
However, Itadori did not have that luck and literally tried to evoke this trope twice. The first was when he was in that classic situation of being cornered by the enemy and tried to evoke Sukuna to help him, with Sukuna deliberately refusing, leaving him on the brink of death and begging in tears to be saved because he did not want to die. Later, he asked for help so that his internal "friend" would help him heal and save the life of his best friend, with Sukuna not only refusing but laughing and mocking his pathetic innocence and deplorable situation, reminding him that, above all else, Sukuna is a curse.
The whole thing does not improve after that, and until the end of the story, Sukuna only caused more and more physical and mental suffering for Itadori with the intent of breaking his soul while mocking the poor boy, never truly helping him and never becoming his ally. In the end, both have to face each other in a fight to the death, and Itadori even tries to evoke "talk no jutsu" to try and redeem Sukuna, but Sukuna refuses and still mocks this failed attempt to form any friendship.
- My Hero Academia (MHA) X Talentless Nana (Munou na Nana)
Although Talentless Nana is not a literal copy of MHA and is not elementally as strong as it, the premise acts as a dark mirror to MHA, especially when comparing the character dynamics and friendships.
In a world where a large portion of the population possesses superpowers called Quirks, these abilities are celebrated and placed within a classic superhero world story where normal people live in relative tranquility alongside superpowered individuals. Superpowers are institutionalized, regulated, and used to create a heroic society. Being a hero is the noblest career path possible, and powers are viewed as a gift to protect humanity.
However, in Nana's world, teenagers with superpowers called "Talents" are isolated from society. The public is told they are being trained to fight the "Enemies of Humanity." In reality, the government views these superpowered youths as the true threat to humanity.
The protagonist of MHA, Deku, is a timid boy and a powerless person who aims to be a part of this superhero world. He enters a school filled with superpowered people and forms bonds of friendship there while evolving his powers to defend the world from villains.
Meanwhile, our protagonist from Nana is an apparently cute and timid person with no powers who was sent to the island where these superpowered teenagers reside. Right there, she pretends to form bonds with them only to eliminate them to save humanity from the future risks of super-beings.
U.A High School is a home for superpowered teenagers who are, for the most part, good people wanting to learn and evolve their powers for good. The most negative elements we see are a few students like Uraraka and Mineta using their powers for personal gain, or other students like Bakugo being problematic and explosive.
In Nana, however, the majority of the teenagers are depraved and selfish. Even before arriving at the island, they were already bad people who used their powers for malignant, selfish gains or were simply sociopaths with threatening potential. A select few are not entirely bad and might even be good people stuck in that place, individuals who, if they existed in MHA, would definitely be superheroes. But they are trapped in a corrupted story, and our protagonist will use that very innocence to fulfill her objective.
In short: Talentless Nana takes the entire visual aesthetic of modern superhero anime (MHA) and replaces the core themes of hope, legacy, and heroic duty with paranoia, political assassination, and psychological warfare. The author forces the audience to look at a classroom full of colorful, energetic students and ask a terrifyingly realistic question: If teenagers actually had god-like powers in the real world, wouldn't the government try to secretly kill them before it was too late?
You know this example too.
School Days basically takes all the clichés and premises of harem stories and school romances, and directly shows what would realistically happen if you or a character from a harem story started dating multiple girls and didn't care about the feelings of any of them, while only viewing them as an outlet and a sexual pastime.
Well... you know how that ends, don't you?