When Asia Argento was excommunicated for healing a Devil, she had lost all hope. So, with nowhere left to turn to, she began to pray for a hero, someone who could aid her in her time of need. As she prays, mysterious markings appear on her hands, and a knight in shining armor appears to aid her.
Charlemagne had finally done it, he had become a real Heroic Spirit, no longer a mere shadow of Karl. But life in the Throne of Heroes was rather boring, so upon hearing a prayer for a hero, he answers the call. What better hero than him, right? But this world is different, he has no knowledge of it, and he soon finds himself in the middle of a rather peculiar Grail War...
Tropes found in Charlemagne and Asia's Magnificent Journey:
- Became Their Own Antithesis:
- Charlie laments that the historical Karl was much like Charlie in his youth, but the realities of ruling as a king hardened Karl's heart as he sought to bring world peace by any means necessary.
- Vlad III is summoned as the vampire he wishes to divorce his identity from.
- Bitch in Sheep's Clothing: Marius makes a show of pretending to care about Valerie's well-being, but they both know that this is merely an act and that he only wants to use her as a pawn like everyone else.
- Blown Across the Room: The fallen angels can use their light spears to knock Charlie back when he blocks their attacks, sending him through entire buildings. But they completely fail to do actual damage, and he simply has to play catch up before returning the favor with interest.
- The Darkness Gazes Back: When Asia has her first memory dream of Charlie's life, she witnesses him first finding the Velber ruins. She looks at the monument... and it looks back at her.
- Evil Cannot Comprehend Good: The fallen angels are unaware of Servants and think Charlie is an ordinary knight working for the Church. When he pursues them for kidnapping Asia, they incredulously ask why he would care about someone who was excommunicated.
- For Want of a Nail:
- Charlie foils Raynare's kidnapping of Asia and the extraction of her Sacred Gear, meaning that the events that lead Asia to be inducted into Rias' peerage never happen. This also prevents Issei's death at the beginning of DxD canon and (presumably) changes the circumstances of him becoming a devil.
- Vlad and Valerie completely annihilate Clan Tepes, preventing their schemes of summoning the Evil Dragons from coming to fruition.
- Mugging the Monster: The fallen angels are aware of Charlie's existence and seek to lure him away so Kalawarner can deal with him in secret while Raynare and Dohnaseek extract Asia's Twilight Healing. Unfortunately for the fallen angel grunts, they picked a fight with a Servant and a powerful one at that.
- The Needs of the Many:
- Vlad interrogates King Tepes on why he'd use his own daughter as a tool for Clan Tepes' ascension. Tepes responds by saying that to choose between his daughter and the ascension of his entire clan, of course he'd sacrifice one for the many. Vlad agrees, as it's only natural to favor the welfare of the whole rather than the individual, giving Tepes a swift, painless death via stake to the heart compared to the painful impalement of the rest of Clan Tepes.
- Similarly, Lord Vladi, a subordinate of Tepes, pleads with Valerie to spare his subjects, as they were Just Following Orders, asking that she only kill him instead.
- Our Vampires Are Different: Clan Tepes is an organization composed entirely of vampires. Like the vampires of lore, they're vulnerable to sunlight, holy water and artifacts, and stakes through the heart. But Vlad III is something else entirely, having far greater powers than the average vampire due to being the embodiment of vampiric legend itself.
- Superpowerful Genetics: The descendants of heroes in the DxD world tend to be far more powerful and talented than other people. For instance, Le Fay Pendragon is a descendant of King Arthur and Morgan Le Fay and is a powerful witch.
- Trapped in Another World: What tips off Charlie that he's not in the Fate Universe is that he doesn't have the knowledge he'd normally acquire when participating in a Grail War. He soon pieces it together once Asia tells him about the world itself.
- Vampiric Draining: Vampires, as per the norm, drink blood to survive. Valerie refuses to do so as a dhampyr, finding what Clan Tepes does to be revolting. She's forced to do so to survive after her soul is damaged when her father forces her to summon the soul of an Evil Dragon with Sephiroth Graal.
- Villains Want Mercy: After trying and failing to sneak attack Charlie and Asia, Raynare gets pinned to a wall by Charlie's halberd. She soon prostrates herself before him and begs for her life, but her pleas fall on deaf ears and she's incinerated by Joyeuse's light.
- Wham Line: Though it comes early in the story, Asia's unfamiliarity with the Holy Grail and there being a number of them - widespread knowledge in the Church in the Nasuverse - causes Charlie to have an Oh, Crap! reaction as it recontextualizes everything about how this War may go.
- You Are What You Hate:
- Vlad Tepes is summoned as Berserker, transforming him into one of the vampires he hates so much due to his Noble Phantasm, Legend of Dracula. The only reason why he doesn't kill Valerie on the spot for summoning him in this form is because he knows she summoned him accidentally rather than purposefully.
- Valerie hates Clan Tepes for keeping her trapped in a Gilded Cage and using her for their own murderous ends. After she and Berserker slaughter her entire family, she begins to hate herself too.