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Fanfic / The Teacher of All Things

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The Teacher of All Things by Sadhelm2 on is a Digimon V-Tamer 01/Digimon Adventure Crossover. One year after Taichi "Tai" Yagami saved two worlds from Daemon and six months after he lost his partner, Zeromaru, his friends and family make a last ditch effort to drag him out of his depression — by sending him to summer camp. From there it mostly follows Adventure's plot until certain pre-existing relationships cause it to go Off the Rails. It is complete and has a sequel.



  • The Ace
  • Adapted Out: Lord Whamon's roles are overtaken by Gon the Deep saver and Lord HolyAngemon. The author later admitted this was a mistake.
  • Admiring the Abomination: Seeing super ultimate for the fourth time fills Taichi with dread but he has to admit to finding it beautiful.
  • A Father to His Men: Though never explicitly shown, it is stated that MetalSeadramon was like this to his army. The actions of Pukumon and the rest of his forces support this, as well as their continued loyalty to MetalSeadramon's cause even after his death. Too bad Machinedramon's just using them to fulfill his own agenda.
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  • All There in the Manual: Though the author typically gives the necessary background information from V-Tamer when a particular aspect from it is referenced within the story, reading the manga provides nearly all of the exposition for Tai's darker history. As more of the story's plot continues to be effected by events that occurred within V-Tamer, it is likely a good idea to read it and better understand how the two stories relate to one another. On the occasions that the author has not given the necessary information and simply inserted references to events that transpired in the manga some readers were confused as to where the information originated from.
  • Always a Bigger Fish: MagnaAngemon's Gate of Destiny leads to a dimension full of banished enemies and Eldritch Abominations. Whenever he uses the technique, he never allows it to stay open for very long for fear that they may escape. One of these creatures helps to destroy a pursuing Diaboromon copy while fighting in this dimension.
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  • Always Someone Better: This is generally how the other Tamers and Digidestined view Tai, they put him on a pedestal because of all he's been through. Interestingly the other chosen children are fine with him being on such a pedestal, Tai however, views them as equals with him just being the leader. Taichi was, however, mistaken about his purpose as leader, believing it to be leading out of danger and ultimately out of the Digital World. There are no spies or soldiers on his side for the majority of this particular conflict so he needs to send other kids who did not volunteer to fight into danger.
  • And I Must Scream: All of Machinedramon's Mooks are actually prisoners whom he forcibly converts into Sealsdramon and Commandramon. Andromon becomes an unfortunate victim of this.
  • Ascended Fanboy
    • Taichi, but not to the degree of Alias III and Neo, who it turns out know much more about Digimon despite spending less time in the Digital World than him.
    • In his youth, Leomon found himself awed by the legends of "The Great One" (a title given to Tai due to his exploits) and strived to follow his example. Now he gets to fight alongside him.
  • Awesome by Analysis: In nearly every battle Tai is able to assess the situation and control the battle. He will observe his opponent and frequently defeats them by targeting the enemies' weaknesses. This allows him defeat higher level Digimon that are more powerful than his own.
  • Back from the Dead
    • Myotismon has done this at least three times, once in V-Tamer, the second time when he first appears in this story, and the third when he uses the prophecy to digivolve himself into MaloMyotismon.
    • As in canon, Etemon comes back during the battle against Puppetmon as MetalEtemon.
    • Wizardmon turns out to be Sigma's Piedmon reborn.
    • Machinedramon resurrects MetalSeadramon as GigaSeadramon, although MetalSeadramon's personality has been overwritten to serve Machinedramon.
    • Machinedramon himself is actually Neo Saiba's MetalGreymon, revived by Apocalymon.
  • Badass Cape: Taichi's yellow cloak in the original V-Tamer story. He returns to the Digital World with his cloak when he once again takes up the mantle after his 10-Minute Retirement.
  • Badass Normal: Hiroaki Ishida, Matt's father, and the rest of his crew, specifically him and his cameraman. After surviving the initial raid by Myotismon's forces by chance, they all sneek past the Digimon guards in front of the news building. When they are seen, they manage to get away and prepare a newsbroadcast to warn Japan and the rest of the world. Oh, and all through this the camera is still rolling! When they are caught again on the way to send it, Hiroaki trys to fight off the attacker with a metal mop so the rest can get away. Hiroaki and his cameraman, Jeremiah, saw a lot of nasty things in Bosnia.
  • Bad Boss: Myotismon when he gets angry starts killing off minions.
  • Batman Gambit
    • As in Digimon V-Tamer 01, Tai has the ability to come up with these on the fly, allowing his partner to take on enemies of much higher levels.
    • Machinedramon pulls off one of his own to take out Piedmon.
  • Batman Grabs a Gun: Knowing that Myotismon will never stay dead of his own volition WarGreymon decides to load his data to make sure he'll never come back from the dead again.
  • Berserk Button
    • Tai to Myotismon, threatening a younger sibling for Neo, Tai, and Matt.
    • Upon first seeing Neo, Wizardmon/Sigma's Piedmon immediately attempts to attack him, though considering their last encounter, this is understandable.
    • Machinedramon's Villainous Breakdown is caused by Tai (correctly) guessing that the former MetalGreymon still misses Neo and is attempting to hide it behind Chaosdramon X's metallic armor.
    • Implying Tai can't save anyone, helps if they use Daemon's ' the strong live, the weak die' Ideology. Interestingly Tai can self-inflict this as shown in chapter 42, he also bloody loses it and is said to be melting and will attack anything friend or foe.
  • Big Brother Instinct: Neo Saiba's toward his sister Rei is what caused half of the problems Taichi initially had to deal with, and Neo was working with much less time than Daemon. Taichi is himself this way toward his own sister Hikari, just not in the same way. Matt is also highly protective of TK.
  • Big Damn Heroes
    • Quite a few times though Zudomon in particular seems to be made of this.
    • Garurumon saving Hiroaki from a Digimon.
    • SaberLeomon coming out of nowhere to attack Apocalymon during the Final Battle just as he's about to delete Tai.
  • Big Entrance: Tai and MetalGreymon pull one off when they begin to fight Myotismon at the Sports Center. Highlights include a Big Damn Heroes moment, There Was a Door, and a Dynamic Entry on the DarkTyrannomon specifically.
  • Call-Forward: It turned out to be very fortunate that Taichi and Zeromaru met some of the soldiers—a Greymon, a Tyrannomon, and a Centarumon—that Leo had trained. Because they mention that they had all been Agumon, Tai is later able to figure out that the Agumon card is the False Gate Card when the Digidestined are trying to get back home.
  • Canon Discontinuity: Yeah, those V-Tamer crossovers with other entries in the franchise had to be ignored. Actually, two of them are used for this plot.
  • Cherry Tapping: Tai and Agumon go through the entire File Island Arc beating even Perfect level enemies without Digivolving.
  • Composite Character: Given that this is a Fusion Fic, some of the Adventure and V-Tamer characters are the same people.
    • First, there is of course Tai who travels through the plot of Adventure but is the V-Tamer character.
    • Myotismon turns out to be the same mon that guarded the Tag of Illusions, but has returned stronger than ever and becomes Tai's Arch-Enemy.
    • Wizardmon is the Champion form of Sigma's Piedmon, and has joined Myotismon's army as a Reverse Mole and to meet Sigma again.
    • The Dark Master's Piedmon is a brainwashed Pul.
    • Machinedramon is Neo's MetalGreymon, back from the dead and hungry for revenge against Tai and Neo.
  • Dark Is Not Evil
  • Deader Than Dead: To ensure Myotismon doesn't come back a fourth time, Tai as WarGreymon absorbs all of MaloMyotismon's data.
  • Death by Adaptation/Spared by the Adaptation: Both Ogremon and Andromon, who survived in canon, end up getting killed, while Leomon and Wizardmon have (so far) both been spared their unfortunate fates.
  • Disproportionate Retribution
    • Granted that Tai may have killed Myotismon when seeking the Tag of Illusions during his first trip in the Digital World, but his rage is so great towards Tai that his hated sustains his life force for over two thousand years in the Dark Area. Not only that, but he pleasantly goes out of his way in his attempt to make Tai suffer simply to break the look of defiance that Tai had in his eyes. Also counts as Misplaced Retribution towards Gatomon, whom he punishes and abuses simply for having the same look in her eyes.
    • All the horrors Machinedramon commits throughout the Dark Masters Arc is simply because Tai failed to save him from Neo's abuse when he was MetalGreymon.
  • Door Stopper: The story has 43 Chapters which span six story arcs, and has a word count of more than 440,000 words.
    • In case anyone is interested and because I have no life, I calculated the word count of each individual arc.
      • The Devimon Arc: Spans Chapters 1-8 with nearly 64,000 words.
      • The brief Etemon Arc: Spans Chapters 9-12 with around 40,000 words.
      • The Myotismon Arc: Spans Chapters 13-23 with the largest amount at almost 121,000 words.
      • The Dark Masters Arc: Spans Chapters 24-33 with a sizable count of nearly 95,000 words.
  • Dramatic Irony: As one reviewer points out, after Tai fought so hard to beat some sense into Neo, causing him to at last feel shame and regret for his actions, particularly his betrayal of MetalGreymon, his partner ends up following in his footsteps.
  • Dumb Blonde: Mari invokes this so that she can than catch people unaware and use it against them.
  • Early-Bird Cameo
  • Expy: The combined traits of V-tamer Taichi and Adventure Taichi, along with some further developments in this story have turned him into an expy of Tsuyoshi Kaijō from Himitsu Sentai Goranger. The leader, the tactician, the soccer star.
  • Fastball Special: Unwilling version. HerculesKabuterimon X manages to defeat Darkdramon and GigaSeadramon by tossing the latter into the former, causing GigaSeadramon's Giga Sea Destroyer to destroy Darkdramon's anti-matter power source and leaving both of them vulnerable to HerculesKabuterimon X's Mega Electro Shocker.
  • Foreshadowing: Hideto's Never Live It Down moment. When he explains how Omnimon took down an Imperialdramon Fighter Mode He degenerated Omnimon back into Warg and Melg, had Melg freeze Imperialdramon and then had Warg use the Dramon Killers. When he tells Tai this as it informs Tai about the Dramon Killers. As Hideto has raised a WarGreymon from an egg, there is no way that he could realize its importance. Guess how MetalSeaDRAmon died!
  • For Want of a Nail: The crossover aspect of the story could be viewed as such with Tai's past experiences serving as the alteration from canon.
  • Four Is Death: It took four times for Myotismon to stay dead in this continuity.
  • Groin Attack: Tai knows that you have to do this against a VenomMyotismon. The others are not so impressed.
  • Goggles Do Nothing: Subverted. As in V-Tamers Tai uses them while his partner is flying. They are also used in a plan to deliver Kari her Digivice mid-battle.
  • Heroic BSoD: Machinedramon's Reveal of himself as Neo's former MetalGreymon causes Tai to freeze up during the first half of their Final Battle, blaming himself for all the bad things he was unable to prevent over the course of both his adventures. It takes a pep talk from Kari inside his head for him to regain his courage and figure out how to beat Machinedramon.
  • Heroic Sacrifice
    • Doubling down with a You Shall Not Pass!, Pumpkinmon holds off Myotismon while Gatomon and Wizardmon escape with Kari's Crest of Light.
    • Chuumon presumably gives his life in his attempt to protect Mimi and Izzy from the Dark Ocean, having been dragged beneath its surface for his troubles. The shock of this causes Mimi to overcome its influence and allow her and Palmon to Biomerge into Rosemon.
  • Hoist by His Own Petard
    • Given the nature of his floating, homing attacks that surge towards enemies on command, Piedmon is defeated when he utilizes his attack and is unaware that he was positioned directly in between his attack and his enemy. Sigma's Piedmon had been defeated by the same attack, though in that case Tai tricked Sigma into instructing that Piedmon warp his swords into his own position and defeat himself.
    • Apocalymon absorbed the data of most of the inhabitants of the Digital World whom had given in to despair. Destroying Zeromaru's V-pet causes him to absorb the data of Zero, whose very presence prevents Apocalymon from using his using his Total Annihilation attack.
  • I Choose to Stay: Rather than return to the Digital World following Apocalymon's defeat, Wizardmon decides to remain in the Real World to reconnect with Sigma.
  • Internal Reveal: We learn at the end of Chapter 29 that Wizardmon is in fact Sigma's Piedmon Back from the Dead. We go through the next three chapters with Tai thinking that the Dark Masters' Piedmon is Sigma's Piedmon reborn.
  • It Was with You All Along: Turns out that the power of the Digi-Mental was within Tai all this time ever since he and Zeromaru first used it against Daemon. It takes the memories of all his human and Digimon friends (plus the sight of Apocalymon callously deleting Zero's V-pet) that allows him to finally unlock it.
  • Karma Houdini: A dramatic example with Neo. Him never having to face justice for his actions is what caused Machinedramon to join the Dark Masters.
  • Keeping Secrets Sucks\They're Called "Personal Issues" for a Reason
    • Tai does not tell everyone that he has been to the Digital World before, and spends most of the time through the Etemon arc internally moaning about where everything he is used to has gone. The reason why he didn't tell the others is because the events of V-Tamers have left him with trust issues. After Neo shoves this in his face, Tai decides to tell the rest of the group after the problems with Myotismon are done.
    • He's not the only one, Hideto tells Tai about something that they don't exactly like to mention, Matt is reluctant to talk about the fact that his family is divorced, and Izzy sure hasn't told anyone else about his issues at home.
  • Lady of War: Rosemon certainty counts as one. She's often described as gorgeous or pretty, can be pretty flirty, and fights harder and more viciously against her opponents than the rest of the cast.
  • Life Will Kill You: What happened to Zero, Lord HolyAngemon, Gabu, and the rest of Tai's V-Tamer friends. This causes him a lot of grief.
  • Lotus-Eater Machine: Just like in the 02 finale, MaloMyotismon uses his Illusion Mist attack to trap the Digidestined in their own personal fantasies. TK's is more or less the same as in canon, which is also shared by Matt, Izzy sees himself with his birth mother, Joe and Sora have improved relationships with their father and mother respectively, Kari sees herself finally being strong enough to play soccer with Tai, and Tai gets to see Zero again. Due to the abilities of the Crest of Sincerity, however, Mimi isn't affected at all.
  • Mass "Oh, Crap!": Done in Chapter 21 and it begins when the group realizes they have slept until 6:00. As VenomMyotismon would revive at 6:06:06 and he did so with his mind in tact, this is understandable.
  • Motive Rant
    • MaloMyotismon gives one to Tai when he becomes the first of the Digi-Destined, though not the first of his enemies, to break out of his Illusion Mist attack.
    • Machinedramon gives one as well right before his Final Battle with Taichi.
  • Mythology Gag
  • Names to Run Away from Really Fast: For villains, "The Victory Tamer."
  • Nice Job Fixing It, Villain!:
  • Not So Different:
    • Tai fears he's turning into Neo with Agumon following Biyomon's What the Hell, Hero? below.
    • Despite being driven by his hatred of Neo, Machinedramon's tactics are disturbingly similar to Neo's at the height of his villainy.
  • Off the Rails
    • Tai makes Devimon and Myotismon so unnerved that they decide to change up their strategies.
    • On a similar note, Tai discovers Kari's Digivice during his 10-Minute Retirement and accidentally takes it with him. He also sets up a meeting with the other V-Tamers, placing him in Shibuya (Matt and TK are also there for other reasons) when the rest of the Digidestined find out the consequences of Myotismon going Off the Rails.
  • Older Is Better: Tai, Myotismon, and Machinedramon are all survivors from the V-Tamer era from two-thousand years ago and their tactics, strategies, and weapons are far more dangerous and effective than Adventure era methods.
  • One-Winged Angel
    • Using the Prophecy, Myotismon Digivolves himself into MaloMyotismon, rather than VenomMyotismon as in canon.
    • Machinedramon uses the Red Chrome Digizoid and the data of his minions to Digivolve himself into Chaosdramon X.
  • Out-of-Character Moment: Homeostasis is always The Stoic when talking with the kids in Canon, here she makes Tai mad at her by speaking through Kari, all he does is tell her to get out of Kari, she is immediately nervous because he is mildly upset at her.
  • Painting the Medium: All of Machinedramon's dialogue is written in bold-type.
  • Portrait Painting Peephole: Devimon performs this in his illusion created mansion by having himself appear as an angel portrait. Tai, seeing the angel in the painting is black, will have none it and has Agumon Pepper Breath him in the face.
  • Precision F-Strike: "THIS IS FOR GOTSUMON, YOU BASTARD!"
  • Rapid Aging: Not even Arkadimon, who gained a level before leaving the incubator its egg was in, evolved as fast as Kuramon.
  • Rapid-Fire Typing: Neo and Sigma now have Izzy to rival them.
  • Reality Ensues: When you call someone's house at nine at night asking for their children, getting hung up on is the least of your worries.
  • Red Herring: For a while, it seems that Machinedramon is gathering the needed components to create a Chimeramon to fuse with and become Millenniummon. Then we discover that he purposely avoided that line of evolution, with prejudice.
  • Redemption Equals Death: After finally realizing that he had the power to pursue his own course and that he didn't have to bend the knee to every tyrant that came along, Ogremon decides to fight for good and ends up giving his life for his new cause.
  • Retcon: Some minor changes were made to get the plots of V-Tamer and Adventure in sync, such as getting Zero to the ocean much sooner on the V-Tamer side and Tai's expanded friend network on the Adventure side. Hideto was apparently lying when he lectured Taichi and Zero about ancient types.
  • Rousing Speech: The following is delivered by Pukumon to his men before the attack on Piedmon's castle:
    "We will fight to the last breath, to the last digimon! They will taste our weapons, they will taste our resolve, they will taste our SPIRIT! And my brothers, even if victory is not achieved this day... I swear... we will. MAKE. THAT. CLOWN. BLEED!"
  • Screw Destiny
    • After Koromon finds out about Zeromaru he says he won't be Tai's partner because destiny says so. ...He will be Tai's partner because he wants to be.
    • The Digidestined try and have a plan A for defeating VenomMyotismon that isn't "Follow the Prophecy". Due to what it entails, Tai and Matt being shot with Holy class Ultimate and Champion Level attacks respectively, this is not a surprise. They still have to use the prophecy due to Myotismon coming back as MaloMyotismon instead of VenomMyotismon.
  • The Smart Guy
    • Both Izzy and Sigma serve as this for their respective groups. Though they both are extremely talented in the usage of computers, Izzy is more of a Gadgeteer Genius due to his ability to modify the Digivices and their programming, while Sigma is a definite Techno Wizard that is capable of finding your phone number in under five minutes with just a name.
    • Neo isn't much of a slouch either, able to create and bait a virus that can kill Armageddomon with no prior warning.
  • The Starscream: Machinedramon successfully organizes a coup over Piedmon for control of the Dark Masters and is plotting to take out Apocalymon as well.
  • The Strategist
    • This is Tai's main role. It's what earned him the title of "Victory Tamer."
    • While Taichi is the superior analyst, Neo Saiba has him beat in long term strategy.
    • Machinedramon is one for the villains' side.
  • Sympathy for the Devil: Even though he's proven himself a horrible monster with his actions, Tai still sympathizes with the dying Chaosdramon X, and promises to reunite him with Neo after he's reborn.
  • Tactical Rock–Paper–Scissors: The Virus-Vaccine-Data triangle is used to a greater degree than it was in either V-Tamer or Adventure. Level still trumps attribute though...and they both mean less to Angemon.
  • Take a Third Option: When you can't get to Odiba because the bridge has collapsed and the waters are too full of enemies to swim-not that Greymon are great swimmers anyway-and flying in would only get you noticed and mean you have to fight of an entire army at once... What do you do? Why take the still under construction tunnel of course!
  • Title Drop: Chapter 21: "Experience is the teacher of all things." -Julius Ceasar
  • Unskilled, but Strong: Knowledge is power, especially in a world of data. Izzy has the crest of knowledge and thus picks things up very quickly but is not the best at applying what he knows. Only the prior Tamers are more tactically minded than he is but it is by a noticeable margin.
  • Vagueness Is Coming: During chapter 42 Tai remembers this line.
    I am a God... The rest of the Triumvirate will perish.
    • It's implied to have something to do with Apocalymon, as those are parts of two different lines spoken by him that Taichi just connected.
  • Villainous Breakdown: Once Tai (correctly) guesses that even after all these years, Machinedramon still misses Neo, Machinedramon becomes more and more emotional and erratic as the fight progresses, all the while denying Tai's claims.
    Chaosdramon X: Neo doesn't miss me! And I don't miss him! I don't! He is nothing to me anymore!
    • He has another, less noticeable one, minutes later when MetalGarurumon, Phoenixmon, and HerculesKabuterimon X perform a Big Damn Heroes to back Tai up when he's running low on energy, surviving despite Machinedramon's attempts to attack them using their emotions. The Dark Master is so stunned at this, he doesn't even attempt to fight back when they're firing their final attacks.
    Chaosdramon X: I didn't calculate...them overcoming...
  • Weak, but Skilled: Tai and Agumon defeat even Ultimate level monsters while still at the Rookie stage. The skill is due to Tai's previous battle experience and his battle tactics.
  • What the Hell, Hero?
    • Tai gets this from Biyomon when his actions cause Agumon to become so desperate to please him that he tries to fight Etemon's Gizamon minions on his own.
    • After learning about Tai's previous experience with the Digital World, some of the other Digidestined feel this toward Gennai and the Sovereign.
  • Wrong Genre Savvy
    • While Tai's experience does prove useful more often than not, V-Tamer and Adventure are two very different things, so not all of his experiences are relevant. This is especially noticeable with his reluctance at first to fight the Dark Masters' Piedmon, out of the mistaken belief that it's Sigma's fallen partner who Came Back Brainwashed and Crazy. Machinedramon on the other hand....
    • Later Subverted. Eventually we learn, that the Dark Master Piedmon was Pul, one of Tai's friends from his first trip to the Digital World. It is implied that he tried to Digivolve to Protect the world at some point only to fail and become part of Apocalimon before being revived. Piedmon only remembers this as he dies. He does not take this well.
  • Year Inside, Hour Outside: Specifically, two thousand years in the Digital Word approximates to one year in the Real World.


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