''Franchise/ShinMegamiTensei'' is a series of video games with serious adult and religious themes. Apocalypses happen frequently. People die. Friends betray each other.

''Shin Megami Tensei: Devil Children'' has all of that. It's just got a cheerier art style.

Released only in Japan except for two games, ''Shin Megami Tensei: Devil Children'' starts off with ''Red Book'' and ''Black Book'' for the GameboyColor (later given an UpdatedRerelease for the {{Playstation}}), the story of Setsuna Kai and Mirai Kaname, a pair of human teenagers quickly revealed to be the titular Devil Children, half-humans and half-demons. This is a very rare occurrence and gives them great power when they come from the human world to the demon one - Setsuna, the hero of ''Black Book'', to rescue his younger brother Nagahisa, and Mirai, the heroine of ''Red Book'', to find out about her father. Once there, the situation quickly complicates far beyond their original goals, and to progress they must gather more [[{{Mons}} partners, or demons]], to fuse and raise in strength.

These games were adapted into an {{anime}}, ''Shin Megami Tensei: Devi Child'', that takes liberties with the game's characters and plot, making it more like a typical shounen adventure series but keeping the mechanics of recruiting, summoning, and fusing demons. It also has a manga with an entirely different plot.

''White Book'' (Gameboy Color) takes place a few years after ''Red Book'' and ''Black Book'', though keeping many of the same characters and themes. Masaki Kuzuha is a teenage boy accused of putting Shou Ougi into a permanent sleep; both he and his friend Takaharu Ougi enter Makai in order to find a way to cure her. Forces seem set on putting them against each other, despite them being close friends.

''Light Book'' and ''Dark Book'' were the two games localized in America as ''Demi Kids: Light Version'' and ''Dark Version'' for GameboyAdvance. They again take the same story and show it from two different perspectives, ''Light Book'' from the slacker named Jin and ''Dark Book'' with Akira, his friend, as the hero. Who battle against the tyranny of the Imperium from Valhalla. This also received a non-localized anime.

''Fire Book'' and ''Ice Book'' for the Gameboy Advance still center around Jin, Akira, and their cast, which has angels and demons appearing on many worlds in order to fight each other and begin Armageddon after the events of ''Light/Dark''.

''Puzzle de Call'', a puzzle game for the Gameboy Advance. It stars the demon partners of Jin and Akira, known as Gale and Rand, as they attempt to save the two Devil Children who have been captured in another world.

''Messiah Riser'' is a RealTimeStrategy game taking place after Fire and Ice Book. Valhalla had been restored and unfortunately a demon sealed away by the Messiah had been free, reviving the Imperium that fell in Light/Dark Version to once again take over.

A game was released on the Mobile Phone named ''Shin Megami Tensei: Devil Children'' in Japan in 2011. Details on the game are for the most part unknown.

The gameplay is similar to most games in the series, and many demons from the rest of the world make an appearance.

This is the only subseries in the franchise that carries the title of ''Shin Megami Tensei'' in Japan. Light Version and Dark Version were also the first games to bear the title ''Shin Megami Tensei'' in the west, beating out [[OlderThanTheyThink the game people usually ascribe that honor to]], ''VideoGame/ShinMegamiTenseiIIINocturne'', by several months.

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!!This series provides examples of:

* AdaptationalHeroism: Elegy is soon on the heroes' side in the manga, and gets to be Setsuna's love interest when the two hardly share a conversation in Setsuna's game.
* AdaptationalVillainy: Quite a few demons that were good or while not good but weren't aligned to a certain side ended up becoming the minions of the villains in the anime. Zebul became the BigBad of the first anime, Raphael became a spy for the ObviouslyEvil Light Imperius and his ArsGoetia minions in the second anime, [[spoiler:Enoch]], and more.
* AdultsAreUseless: It does have children as the focus, rather than the ambiguously teenage to adult protagonists of other games. Lucifer eventually realizes this and helps the children any way they can when something threatens the world.
* AllMythsAreTrue: And some they just made up.
* AmbitionIsEvil: [[spoiler:Azazel]]'s desire to rule over the demon world leads him to [[spoiler:trap Lucifer and impersonate him]] in Red/Black book. He then plans on taking over the human world and sends demons to attack it. This is also [[spoiler:Raguel's]] motivation in ''White Book''.
* ApocalypseHow: You can start one yourself! Please do the honors.
* ArchangelMichael: Nagahisa's father. He's one of the ruling angels of Tenkai.
* ArsGoetia: Many bosses in the series are Goetia demons. Many of whom are either still Angels or allied with them. There are exceptions of course. Though due to being bosses they tend to belong to the Boss Type, which is made up of demons of different races faced during the story.
* AsLongAsThereIsEvil: Jashin, Seipher, Quazir, and both Shugoshins will all eventually be reborn even if they are killed.
* ATasteOfPower: Both Jin and Akira's partners are in their ultimate forms at the beginning of ''Fire/Ice'' and face off against strong demons for the tutorial battle.
* TheAtoner: Takaharu Ougi and some Angels.
* BackFromTheDead: Amy and Lena at the end of ''Light/Dark''.
* BadassAdorable: The art style applies to every demon, including the ones you've trained to be as gamebreaking as possible.
* TheBadGuyWins: [[spoiler: The second anime ultimately ends with Enoch brainwashing Lena, faking his death, and planning on manipulating the characters from the shadows with them none the wiser]].
* BiblicalBadGuy: Beelzebub (Zebul) in the anime. Sorta. {{Satan}} in the anime.
* BigBad: Michael in Red/Black book, Raguel in White Book, The Imperius in Light/Dark Book, and Shugoshin in Fire/Ice Book.
** The anime has Lucifer [[spoiler:except he's been BrainwashedAndCrazy]] and Zebul. The second anime has the Light Imperius [[spoiler:and Enoch]].
* BigBadWannabe: [[spoiler:Azazel]] in Red/Black Book.
* BigDamnHeroes: Zett loves doing this to Setsuna, and Setsuna loves doing it back to him.
* BittersweetEnding: None of Red/Black Book's endings are completely happy. Either the world has been destroyed, or Nagahisa is dead, or you only exist as a god.
* BonusBoss: Zebul, Phegor, and Berith in the Deep Hole of any game.
* BonusLevelOfHell: The Deep Hole. It's hell in hell.
* CampGay: Fenrir in the anime.
* CanonForeigner: The anime introduces the Queen Frost, who rules alongside King Frost.
* CardGames: Devil Children has one in Japan.
* CastFromHitPoints: Physical skills, as per series standard.
* TheChessmaster: [[spoiler: Benevolent example in Zebul. He manipulates the events of Red/Black book to ensure that Ragnarok happens and not Armageddon. It's hinted early on but not apparent until Takajo Zett takes his true form]].
* TheChosenOne: Takaharu Ougi and Nagahisa Kai are the chosen Angel children. [[spoiler:Masaki is the chosen hybrid that can defeat Jashin]].
* ChronicHeroSyndrome: Setsuna and Mirai save people. A lot.
* CuteMonsterGirl: Many.
* DarkIsNotEvil: Many, many, many demons.
* DarkerAndEdgier: The manga has considerable amounts of blood and gore.
* DefectorFromDecadence: Zett in the anime. Azazels daughter Elegy sides with the [[spoiler:[[LesserOfTwoEvils Angels]]]] in Red/Black book after seeing what her father does.
* DePower: Both Isaac and Mephistopheles return Jin and Akira's partners back to their original forms at the beginning of ''Fire/Ice''.
* DidYouJustPunchOutCthulhu?: Red and Black Book's final boss fight is against Hoshigami. While Yahweh is stated to not be the creator of the universe itself, Hoshigami is explicitly stated to have done so. You fight her evil counterpart in White Book.
* DisposableWoman: Both Amy and Lena in ''Light/Dark''.
* {{Doppelganger}}: An enemy that looks like the current protagonist.
* TheDragon: Mephistopheles and Isaac to Ice Apostle and Flame Apostle in Fire/Ice Book. Fenrir and Abaddon to Lucifer in the anime. Crocell, Ose, and Gemory to Imperius Remiel in the second anime. Puck is this and BumblingSidekick to Raguel in White book.
* DubNameChange: Plenty of demons had their names changed along with places in the ''Light/Dark'' translation. Earth became Rem, Makai became Dem, etc. There are some exceptions. Beelzebub (Zebul), Azazel (Azel), Belphegor (Phegor), and some others had these names in the Japanese version.
* EvilCounterpart: Jashin to Hoshigami.
* TheEmpire: The Imperium of Light/Dark Version. Brought back in ''Messiah Riser''.
* FateWorseThanDeath: Being left in the Deep Hole. It's used for the worst crimes demons do.
* FinalBoss: Hoshigami in Red/Black Book, Jashin in White Book, Seipher/Quazir in Light/Dark Book, and Shugoshins in Fire/Ice Book.
* ForeverWar: Between the Angels and Demons of Muspellheim and Niflheim in Fire/Ice Book. They're also willing to drag all other worlds into their [[ApocalypseHow war]] by [[spoiler:disguising themselves as angels or demons then attacking the other side]]. This is also the goal of Shugoshin who sees eternal, neverending warfare as the destiny of the universe.
* FusionDance: Series standard.
* GlamourFailure: The [[spoiler:Fire and Light demons of Muspellheim aren't very good at copying the appearance of the Bel brothers in ''Book of Ice'']].
* GodIsGood: Hoshigami is a loving creator God. You do have to fight her, but that's just part of the process.
* GodOfEvil: Jashin is a evil god defeated by Hoshigami before she created the universe. Then returns as the FinalBoss of White Book.
* HalfHumanHybrid: They don't happen often: rare enough to require a TitleDrop even. There's also the Angel Children born between humans and angels. It's also possible to pass on the powers of demons/angels to a human to make them a hybrid. [[spoiler:This is how Masaki becomes TheChosenOne in White Book as he's part Angel, Human, and Demon]].
* HeelFaceTurn: [[spoiler:Michael]] has become good by the time of ''Fire/Ice Book''. He's also become a [[BeautyEqualsGoodness prettyboy]] in the process. [[spoiler:Raphael does one in the anime]].
** Other examples includes Bosses one might come across in certain games who either realize they've been duped or like the Protagonists enough to join them. One example is Remiel joining Jin after he learned that [[spoiler: the Enoch he was serving is a fake]].
* HelloInsertNameHere: You can name Cool and Veil. After they've already introduced themselves to you.
* HeyItsThatVoice: [[ShowtaroMorikubo Yosuke]] is the son of Lucifer, [[AkiraIshida Ryoji]] is Mammon, MamoruMiyano is Akira, AkioOhtsuka is a Virtue, and [[JunkoTakeuchi Naruto]] is Crocell.
* IJustWantToBeNormal: Setsuna doesn't really care about this whole Devil Children business; he's here to rescue his brother. He gets over it when it gets across how much is really at stake.
* IKnowYouAreInThereSomewhereFight: The last battle of the anime.
* InfantImmortality: Averted. Nagahisa is killed in any ending where you don't side with him in Red/Black book.
* JesusTaboo: Jesus doesn't show up, but the Pope does. He's a pretty nice guy.
* KnightTemplar: Angels in a big way.
* LightIsGood: Nathanael in ''White Book'', Hoshigami, and Lord Light. [[spoiler:Michael in ''Fire/Ice'']].
* LightIsNotGood: The angels goals are to destroy humans and demons alike in the first three games.
** DarkIsEvil: Some of the angels are dark element.
* LighterAndSofter: Sort of. By art style and script complexity, at least. {{Atlus}} really did make a valiant effort to produce this kind of game, but in the end they couldn't break out of their mold and just made the terrible things happen to younger people.
* MagicFromTechnology: The gun's not really a gun, it summons demons.
* MasterOfDisguise: The [[spoiler: Darkness and Ice demons of Niflheim are ''much'' better at disguising themselves than the Muspellheim angels in ''Fire Book''.]]
* MasterOfIllusion: Isaac, Mephistopheles, and Shugoshin.
* TheMole: Forlo and Drail in Light/Dark Book. Drail and Raphael in the second anime.
* {{Mons}}: Demons!
* MultipleEndings: In Red Book/Black Book you side with the angels and destroy the world, side with Lucifer and remake it, or make yourself the new God?
** In White Book you can have Takaharu Ougi go ahead by himself to face Jashin alone, challenge Jashin with Hoshigami as one of your demons and allowing Takaharu to fuse with her to give her more power, or you face Jashin alone.
** Fire/Ice Book you either refuse Shugoshin in his true forms offer to become a God or you agree and become God of a world in a ForeverWar. The first choice just nets you a NonStandardGameOver.
* NamesTheSame: The two Imperius share their names with two angels in the anime. Dark Imperius is Azrael and Light Imperius is Remiel.
* NewGamePlus: Available in some games depending on the choice.
* NiceJobFixingItVillain: Puck ends up making Masaki [[spoiler:a human, demon, and angel hybrid]] by mistake.
* NoExportForYou
* NobleDemon: A great deal of demons behave this way. Lucifer especially.
* NotQuiteSavedEnough: Jin and Akira save Valhalla from the tyranny of the Imperium at the end of ''Light/Dark''. [[spoiler: Only for it and everyone who lives there that isn't Amy to die before ''Fire/Ice'']].
* OlympusMons: There are quite a number of big name figures summonable here. Like [[IncrediblyLamePun Zeus]].
* OneGameForThePriceOfTwo: Frequent.
* OracularUrchin: The Angel Raziel's books always tell the future of what happens in Red/Black/White Book and are found throughout the game.
* OrderVersusChaos: The one time this isn't the main conflict of the game comes as a surprise.
** The first three games played it straight between Angels and Demons for the most part with them being WellIntentionedExtremist in ''Red & Black Book''.
** [[spoiler:Ultimately subverted in White Book, while the angels ''do'' want order they are ruled by the power hungry Raguel who only cares about order because it means he can TakeOverTheWorld]].
** ''Fire and Ice Book'' have a similar theme but with Fire and Light representing Order and Ice and Darkness representing Chaos stuck in a ForeverWar.
* OurAngelsAreDifferent: They vary in all forms, shapes, and sizes. Amongst them are the usual angels, several ArsGoetia demons, Satan, the [[{{Zoroastrianism}} Amesha Spentas]], and concepts.
* RageAgainstTheHeavens: Angels are generally some of the last enemies in the games, and the ones you can usually blame.
* RedemptionEqualsDeath: Happens twice in the anime Light & Dark.
** Azrael/Dark Imperius realizes he doesn't want to kill the girl heroes since the girl whom he loved appeals to his real self. Needless to say, Remiel/Light Imperius shows up and kills him within 2 minutes.
** Ose does an interesting twist on this... He invites Akira and Jin, pretending to give up his piece of the MacGuffin - only to start beating the living snot out of them. When Jin perseveres to attack him even when beaten horribly, Ose reveals he was simply testing his resolve to see whether he can trust him to defeat Remiel. Seconds after betraying his master, Gemory shows up and Ose does the HeroicSacrifice by jumping in to block the shot.
* TheResistance: The Rebels of Valhalla.
* SadisticChoice: Setsuna's spent all of Black Book looking for his brother, his only family in the world, to rescue him, and then finds out once he meets him again that Nagahisa is half-angel, hates him for being half-demon, and is helping him destroy the world. He fights him several times, and eventually Setsuna either has to switch sides or kill his beloved brother.
* SatanIsGood: Lucifer wants to unite the demon, angel, and human worlds, and is as good a father as he can possibly be.
* ScrewDestiny: White Book. Masaki may have the power of demons, but that doesn't mean he has to hate his friend with the power of angels, and nobody's going to tell him otherwise.
* SealedEvilInACan: The villain of ''Messiah Riser'' was this until recently.
* SealedGoodInACan: Hoshigami is usually sealed away somewhere in Makai where she sleeps. [[spoiler:Lucifer]] for most of Red/Black book and [[spoiler:Enoch, Zebul, and their brothers]] in Fire/Ice Book.
* SequelFirst: Red Book and Black Book will never make it over here, will they.
* SlidingScaleOfIdealismVersusCynicism: More idealistic than usual for this series, but not so much that it's not a part of the series.
* SuddenlyVoiced: The Playstation remake has voices.
* SuicidalCosmicTemperTantrum: [[spoiler:Raguel]] is willing to awaken Jashin to destroy creation by sacrificing himself since his goal [[spoiler:to TakeOverTheWorld]] is foiled by his fellow angels, demons, and Masaki.
* ThreeAmigos: Setsuna, Mirai, and Zett in the latter parts of the anime.
* TimeMaster: Both Lord Light and Darklord. [[spoiler:Which makes the fact that they didn't foresee Muspellheim and Nifleheim destroying Valhalla weird]].
* TimeTravel: In Light/Dark Books onwards. [[spoiler:This is also how Jin prevents Lucifers death]].
* ToBeLawfulOrGood: Angels and Angel Children suffer from this by being lawful beings by default. Even if they know what they are doing is wrong their lawfulness usually ends up keeping them from disobeying.
* {{Tsundere}}: Masaki Kuzuha is one to his childhood friend Takaharu Ougi. Queen Frost is described as one in the anime.
* {{Utopia}}: Valhalla was originally one.
* UtopiaJustifiesTheMeans: Angels think this. [[spoiler:Eventually get [[HeelFaceTurn better]] after ''White Book'']].
* VillainDecay: Uriel started out as a angel who will do genocide in Red/Black Book and is fought as a boss, but becomes a DirtyCoward who is never fought in White Book.
* WeCanRuleTogether: After Takaharu Ougi fails to fulfill his role, [[spoiler:Raguel]] offers Masaki a chance to aid him in conquering the world.
* WesternZodiac: Book of Light/Dark onwards have the twelve Zodiac Angels.
* WhatMeasureIsANonHuman: Demons vary in their personalities as much as humans do, but don't seem to be all that bad. Angels, too, aren't always jerks.
* YinYangBomb: Book of Light and Book of Dark along with Book of Fire and Book of Ice.
* YouCantFightFate: The Flame/Ice Apostles of Fire/Ice Book firmly believe in this along with all their followers in Muspellheim/Niflheim. [[spoiler:Defeating them and proving them wrong has them ask Jin and Akira to defeat the true mastermind Shugoshin]].