The Legend of the Overfiend

The Legend of the Overfiend (in the original Japanese Chōjin Densetsu Urotsukidōji, sometimes seen as Urotsukidōji: Legend of the Overfiend in English, and often simply called Urotsukidōji) is a series of horror hentai manga and anime, created by Toshio Maeda. It is the Trope Codifier of the Naughty Tentacles genre, and for quite a while was an unfortunately popular candidate for being unwittingly placed in or around the kids section of DVD stores and libraries.

There are six installments of the Anime version, all of them OVAs:
 * Choujin Densetsu Urotsukidouji (Legend of the Overfiend, 1987-1989). Total uncut length: 2:26:06.
 * Shin Choujin Densetsu Urotsukidouji: Mataiden (Legend of the Demon Womb, 1990-1991). Total uncut length: 1:37:33.
 * Choujin Densetsu Urotsukidouji: Mirai Hen (Return of the Overfiend, 1992-1993).
 * Choujin Densetsu Urotsukidouji: Hourou Hen (Inferno Road, 1993-1995).
 * Choujin Densetsu Urotsukidouji: Kanketsu Hen (Urotsukidouji V: The Final Chapter, 1996). Was never completed.
 * The Urotsuki, aka Urotsukidouji: New Saga (2002): A modern retelling of the first half of Legend of the Overfiend.


 * Abusive Parents: Niki's father is an abusive drunk who beats him, and his mother actively encourages it. This is partially subverted in the manga, where Niki's mother is kind to him.
 * Adaptational Heroism: Amano Jaku's manga counterpart is a sociopathic and hedonistic asshole who only cares about himself, and is even proud of it; he practically never does anything heroic at all, unless it benefits him. His anime counterpart, however, is much more heroic and less sociopathic, though in the sequels he still has his jerkass moments.
 * In the manga, Amano's sister Megumi is a manipulative, sociopathic and spiteful bitch who likes to trick men into having sex with her so she can either falsely accuse them of raping her, getting them into trouble in the process, or so she can transform into her true demon form and eat them. Her anime counterpart, on the other hand, while still slutty and perverted, is much more kind and friendly and doesn't do any of the evil deeds she does in the manga.
 * Kuroko is a lot less obnoxious and more friendly in the anime than his manga counterpart, though he's still a pervert.
 * Suikakujyu was a thuggish and aggresive demon in the manga who only wanted revenge on Amano for tearing his arm off. In the anime, however, Suikakujyu was rewritten and edesigned to the point where he was a completely new character altogether, and became an Anti-Villain/Well-Intentioned Extremist who wanted to protect the demon realm by any means necessary.
 * Though Niki isn't a hero in either the manga or anime, he was altered into a more sympathetic and tragic character than his manga counterpart.
 * After the End: The series setting after the second episode.
 * All Anime Is Naughty Tentacles: Due to frequently being placed in children's sections by mistake, there's a good chance this is the series that caused the trope.
 * Anti-Hero: Amano Jyaku.
 * Anti-Villain: Suikakajyu.
 * Bloodier and Gorier: The manga, while having its fair share of violence and death, was very light on the gore. The anime, however, ramps it Up to Eleven by adding Gorn that wasn't originally present.
 * Body Horror
 * Caught with Your Pants Down: Nagumo is caught by the school jock Ozaki masturbating in the ball pit; he then holds him up by the back of his shirt and shows the entire student body his erection.
 * Coitus Uninterruptus: In Legend of the Demon Womb, Amano Jyaku holds a long conversation while having sex with Mimi. In a lava pool.
 * Crapsack World: It was a pretty harsh world to live in even before The End of the World as We Know It. The rampaging demons and bloodthirsty cults that came after didn't help things.
 * Cut Short: Urotsukidouji: New Saga was a retelling of the original Legend of the Overfiend, but the project was cut short three episodes in, leaving a ton of unresolved plot points and inconsistent characterization. Even Amano Jyaku was practically a nonentity.
 * Darker and Edgier: Every installment compared to the one before; it's most notable between Demon Womb and Return.
 * In general, the anime is a lot darker and more violent than the manga.
 * Deadly Upgrade: Anyone who tastes the Chojin's blood (or other bodily fluids) gets a portion of their power, until it overwhelms and kills them after a few hours or days.
 * Deal with the Devil: Niki. He resorts to killing his abusive parents, and replacing his penis with a demon phallus (with some nasty DIY surgery), all because the demons promise him the power to steal Akemi from Nagumo.
 * Decoy Protagonist: Ozaki. Although he's introduced as the jock that the other protagonist, Amamo, has his eyes on, he bites it after his first fight. The nerdy kid that was in the beginning? He's the actual protagonist. Well, asides from Amamo.
 * Deus Angst Machina: Niki, again. He's a friendless loser, rejected by his love interest, women call him a dickless wonder, and his father beats him while his mother cheers his father on.
 * Earth Is Young: Type A (lack of) justification. The world is simply stated to be only three thousand years old, and its age is never discussed in detail beyond that. The intro of the movie version also has an indirect hint of Type B, where mankind is scolded for being so ignorant and foolish that they don't even know about parallel universes.
 * The End of the World as We Know It: Happens at the end of Legend of the Overfiend, and the Overfiend keeps threatening to bring about an even more thorough end to the setting in the sequels.
 * Evil Laugh: Münchhausen does this a lot in Legend of the Demon Womb, to the point of Narm.
 * Evil Versus Evil: Caesar and the Makemonos in Return. The other factions are not much better.
 * Fantastic Racism: Caesar displays this toward the Makemono, herding them into concentration camps and generally regarding them as depraved beasts (not without justification, in many a case).
 * Fan Disservice: Considered a prime example of it.
 * Faux Symbolism: Many a film critic has tried explaining this one in terms of Freudian symbolism, Japanese sociological issues, and the legacy of the Hiroshima/Nagasaki bombings. Sooner or later, they all give up.
 * Getting Crap Past the Radar: This series (and pretty much the entire "naughty tentacles" hentai genre) was conceived predominantly to get around the strict ban in Japan on depictions of genitalia. Those are totally tentacles and not penises...
 * God Is Evil: Once the fully awakened Nagumo begins destroying cities and shattering the dimensional barriers, Amano and his people realize that maybe their prophecies of the Chojin delivering Paradise were mistaken.
 * Gorn: Apparently, a woman being raped so hard she explodes in a shower of blood and intestines is erotic to some people.
 * Grey and Gray Morality: Few of the characters are purely black or white, and even Amano Jyaku's Arch Enemy Suikakajyu was trying to protect the three worlds all along. Later on, the characters have to side with either the Chojin, a Knight Templar deity at best, or his allegedly evil counterpart, reborn as a young girl. It's not clear to them or the audience which one humanity would be worse off with.
 * The Grunting Orgasm: Every time the Chojin rapes a girl.
 * Hooker with a Heart of Gold: Megumi Amano. Not literally a hooker, but otherwise follows the trope to the T.
 * Hopeless Suitor: Niki in Legend of the Overfiend, whose unrequited love for Akemi drives him to.
 * Hotter and Sexier: Inverted with the movie version of the anime, where most sex scenes were watered-down to not be as graphic.
 * In the Blood: In the most literal sense. A transfusion of Nagumo's blood (or sperm) will transform the recipient into a monster.
 * Kaiju: The giant demon-thing Nagumo turns into to destroy the world, the giant sea demon the Makai prince summons to try to fight him, and several other giant monsters conjured up by different factions against one another.
 * The Legions of Hell
 * Kick the Dog: Niki's parents beat and humiliate him shortly before they die. Münchhausen's teacher and principal beat and humiliate him right before they die. Ozaki publicly humiliates Nagumo right before he dies. Let's just say dogs are very well-protected in the Urotsukidouji universe.
 * Love Triangle: Akemi, Nagumo and Niki.
 * Murder the Hypotenuse: Niki tries to literally do this to Nagumo. It doesn't work, since Nagumo's the father of the Chojin, and he just comes back to life.
 * Naughty Tentacles: They've been around since Dreams of the Fisherman's Wife (dated 1820), but this is without a doubt the modern Trope Codifier.
 * Negative Continuity: By the end of Legend of the Overfiend, the three realms have been all but destroyed by Nagumo. But in the next instalment, everything's seemingly fine again, until the third episode confirms it to be more of an Interquel, as it proceeds from the world's destruction.
 * Nuke'Em: Münchhausen plans to destroy the Chojin by launching a whole fleet of ICBM's against Osaka. Amano stops them, not so much to save the Chojin as he was saving the innocent people that have taken refuge there as well.
 * Ordinary High School Student: Nagumo, the lovesick nerd picked upon by the basketball jocks...
 * Out with a Bang: Tons of times. Literally with a bang. Those poor women...
 * Your Head Asplode
 * Panty Shot: Being a hentai anime, there is bound to be several upskirt or underwear shots of attractive women.
 * Parental Incest: Caesar and his daughter Alector from Return of the Overfiend. Alector had little say in the matter...
 * Porn Names: The dub voice actors were so disgusted with the frequent sex and rape they used fake names that sounded like the names porn stars would use.
 * Porn with Plot
 * Prophetic Fallacy: A prophecy claims that the Chojin will bring about a glorious new world once the apocalyptic smoke clears. The heroes begin to seriously doubt that as the series goes on, and it ended without ever revealing how much, if any, truth there was to the prophecy.
 * Reality Ensues:
 * Red Herring: Popular school jock Ozaki is presented as the obvious incarnation of the Chojin, though Genre Savvy viewers will probably see through it the moment they find out there's a shy, lovesick nerd in the running too. A more effective red herring is that.
 * Refuge in Audacity: There's something utterly ridiculous about being raped by a demon and exploding.
 * Shoot the Shaggy Dog: Amano and the Makai spend the whole time trying to find the Chojin and sparring with each other, but in the end Nagumo just turns into the destructor when he has sex and destroys the world, and nothing that Amano or the Makai did would really have mattered.
 * Shrouded in Myth: Amano's expecting the Chojin's human incarnation to be a powerful, charismatic figure, since his culture basically worships the Chojin. Ironically, his sister Megumi had the answer right all along (at least, she kinda did).
 * Stupid Jetpack Hitler/Those Wacky Nazis: Yep, they're here, and Hitler commissioned a demon-summoning rape machine this time around.
 * Super-Powered Evil Side: Nagumo, Niki and Takeaki.
 * The Tokyo Fireball: Happens all the time.
 * Utopia Justifies the Means: The Chojin's justification for destroying the three worlds.
 * Unbuilt Trope: For Naughty Tentacles. Yes, really. In the original movie, being raped by tentacles was generally not particularly erotic, as it almost always led to the tentacles tearing the person apart from the inside. They were used primarily for horror effect, not titillation.
 * Well-Intentioned Extremist: Suikakajyu. He resorts to extreme lengths to prevent the Chojin being born (even causing the Great Kanto Earthquake of 1923). By the end of the movie, we find out his actions were justified.
 * Well-Intentioned Extremist: Suikakajyu. He resorts to extreme lengths to prevent the Chojin being born (even causing the Great Kanto Earthquake of 1923). By the end of the movie, we find out his actions were justified.

Examples from New Saga

 * Bloodier and Gorier: Even moreso than the original OVA if you can believe it.
 * Ms. Fanservice: Genyo and her daughter, Ozaki's lover, Yuri, Naomi, etc. One can even argue for some the nameless women. Niki herself is rather plump, but likely isn't disqualified because of it.
 * Naughty Tentacles: Used by Dorkakuryu.
 * Subverted by during the car rape scene. What looks and acts like a tentacle, if one looks closely, is actually more of a slender, prehensile tail designed for vaginal penetration and restraining helpless women.
 * Panty Shot: There are several scenes where viewers can see up a woman's skirt. The first episode has a doctor's female assistant masturbate to herself by rubbing her panties underneath her purple miniskirt, and there is a scene Nagumo films another student's panties up her school uniform.
 * In her office, when Ozaki becomes the Chojin, Genyo apparently becomes sexually aroused and starts to masturbate. The camera shifts to a shot below her business outfit's skirt and shows her rubbing her lavender panties.
 * Pink Means Feminine: Ozaki's lover in the first two episodes wore a pink suit complete with a pink skirt. Genyo, for some reason, also wears a pink suit, albeit in a darker shade.
 * Reality Ensues: Unlike most cases of Improbable Species Compatibility and monster sex scenes in general,
 * The whole build up to the scene in general. It's eerily poignant and realistic, and to make matters worse,.
 * When seeing on a video tape, Kuroko tries to tell Amano that they've finally found what they've been looking for. Amano gets up too late, however, and sees Ozaki on the video instead, thinking that he's the Ultra God. Videos don't magically wait and slow down long enough for someone important to see them, after all.
 * When Nagumo is caught spying on a bunch of girls and trying to take a video up their miniskirts, he gets caught by a bunch of punks, dragged into their hideout and gets the tar beaten out of him for being a pervert.
 * She's Got Legs: Several females, even the background ones, have very attractive legs, and are the focus of some scenes. The fact they're mostly seen naked or wearing skirts probably helps.
 * Tertiary Sexual Characteristics/Cute Monster Girl: All female demons have breasts and feminine figures similar to human females, and some of them even look like humans. Meanwhile, the males are all monstrous or at least vaguely resembling Humanoid Abominations.