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Fanfic / Returning Welsh Dragon

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Returning Welsh Dragon Hero is a Crossover fanfic between High School D×D and Fate/Grand Order, written by Silver W. King. He has also written Dont Fuck With The White Mage, The Real, True and Totally Did Happen Chronicles of King Artorias and NO CHILL! .

When Raynare murders him with that light lance, Issei's last wish doesn't summon Rias to save his life. Instead, it throws his mind into another dimension, as a Living Servant to help Ritsuka Fujimaru to restore mankind!

They won. And the traditional reward for the hero is to get back home — so that's what happens to Issei. Now he's back to his former life, stranded away from the allies who helped him to grow strong and fought besides him, away from the girl who made him fall in love.

What is he supposed to do, now?

Can be found here on Fanfiction Dot Net or here on Space Battles.

Contains the following tropes

  • And Then What?: Issei's depression is basically written all over him — sure, he's reunited with his parents and doesn't have to fret about mankind's annihilation being made permanent if he fails in his mission as one of Chaldea's Servants, but on the other hand, he was genuinely fighting for a righteous purpose, he had companions and he was in love, and all of this has been ripped away. The first thing he does after waking up in his birth dimension is quietly admitting he wants to go back.
  • Digging Yourself Deeper: Azazel spends the whole time he's at the Hyoudou house tasting his shoe, trying to soothe the Red Dragon Emperor and only succeeding in making himself persona non grata.
  • Dragon Hoard: A very important part of any myths and legends about Dragons. Issei establishes a protective Ward around his house because he deems his parents his hoard, the one treasure he will defend to his death.
  • Dramatic Irony: Seeing Issei doing several mundane actions causes everyone at Kuoh to assume that he's either gotten laid or trying to look up porn stars. Readers will immediately realize that he’s trying to look up Ritsuka and misses her deeply.
  • Extremely Protective Child: Issei threatens to trigger Juggernaut Drive to messily genocide the entire Fallen Angel race merely because Azazel casually barged into his house and hypnotized his parents in order to get an interview with him.
  • Fantastic Racism: Downplayed with Issei, who really doesn't have a sparkling opinion of the Fallen faction. First Raynare attempts to murder him in quite the sadistic way, then Azazel decided hypnotizing his parents would be a terrific idea.
  • From Nobody to Nightmare: In one single week, Issei Hyoudou the meek, goofy and perverted high schooler turned out to be a terrifyingly powerful and skilled Red Dragon Emperor.
  • Irony: Issei ended up moving past his desire for a harem because of his love for Ritsuka, who canonically has an absolutely colossal number of admirers across both genders.
  • Ladykiller in Love: Issei used to covet a harem. Meeting Ritsuka completely overturned his priorities, even if he still keeps hentai games and ecchi magazines in his bedroom.
  • Narnia Time: A few seconds pass between Raynare leaving Issei to die after gutting him, and Issei waking up from mentally joining Chaldea as a Servant. The time differential causes people to have a skewed idea about his ability, since they believe he's basically an instant expert.
  • Normal Fish in a Tiny Pond: Downplayed as Issei wields one of the most powerful Sacred Gears of his world, but after spending a whole year fighting everything the Nasuverse could throw at Chaldea, he's expecting for his opponents to display a certain lever of strength. He's seriously disappointed when he goes to attack the Fallen Angels hiding in the old church only to slaughter them all merely by flaring his power.
  • Occidental Otaku: Rias basically foams at the mouth when she learns Issei basically enjoyed the whole isekai experience, with her Peerage basically sitting on her to prevent the Gremory from immediately questioning the teen about his adventure.
  • Oh, Crap!: Azazel very much freaks over Issei finding him speaking at his hypnotized parents and deciding to trigger Jugernaut Drive as the appropriate reaction.
  • O.O.C. Is Serious Business: Everybody treats Issei's newfound politeness and loss of unchecked libido as a sign of the upcoming Apocalypsis.
  • Princely Young Man: After spending a year fighting for Chaldea, Issei suffered much Character Development and now behaves as a well-mannered, gentlemanly and helplful young man. His schoolmates find the change freaky, and several girls are quite weirded as they cannot help thinking this new Issei attractive. An omake reveals that his alias in Chaldea was Prince Hydro and that he tried to invoke this trope when meeting Ritsuka, but ended up having a Fake–Real Turn.
  • Shout-Out: Rias declaring that "THE ISEKAI IS REAL!" Is based off of Whitebeard's statement regarding the titular One Piece.
  • Stranger in a Familiar Land: It's very obvious that Issei is quietly dejected over the loss of purpose and genuine bonds entailed by his coming back to his birth dimension.
  • Trapped in Another World: An interesting variant, as Issei mentally travelled to Chaldea to be summoned as a "Living Servant" by Ritsuka. Rias outright calls his experience an isekai story.
  • World's Best Warrior: Issei has a serious claim on the title, having spent almost a year fighting everything the Nasuverse could throw at Chaldea to prevent mankind's restoration.
  • Wrong Context Magic: The reason why Da Vinci and Waver couldn't teach more than the basis of Magecraft to Issei. As he originates from another universe entirely, he just doesn't bear the same spiritual organs to enact spells.