Author's Note: So this is my first story ever, I know it's probably bad so reviews would help. Isabelle is a character I made up just for this story. She's a daughter of Poseidon and blessed by Hades, and vice versa for Nico. I own nothing from the Percy Jackson Series.
The cold, black palace in the Underworld is nothing new to the son of Hades and his wife, a daughter of Poseidon. They were previously surfing in Hawaii before they got a distress call from the Underworld, requesting their presence immediately. Upon entering the private quarters of the god, both kneeled and said, "My Lord." Hades turned around, "No need for formalities; we are family. But I'm afraid I don't have time for this. I have a mission for one of you, to execute the wizard Tom Riddle."
The pair had heard this name a number of times from souls who died by his hand, souls who died for him, and from the god before them, who complained that his attempt at mortality was an insult to the gods, and from escaping death, an insult to him. "He is currently about to fight the chosen one in a battle in which the victor is unclear. I need you to go and intervene to make sure his soul is mine once and for all."
"You go Nico," Isabelle said, "And have fun putting on a show." Nico gave a simple nod as an answer, before giving his wife a quick kiss and disappearing into the shadows. Hades, being reassured about the situation, turned to his daughter-in-law, "So I suppose this will also help you with the amount of souls that need to be collected?" Isabelle smiled at her Uncle, before the two got into a comfortable conversation.
Meanwhile, Nico was in the midst of shadow traveling to the ongoing battle. He knew that the battle would be going on at Hogwarts School of Witchcraft and Wizardry for many a reasons. The chosen one, being Harry Potter, had been missing from his seventh year at the Hogwarts castle (He knew this because it's been all over the Daily Prophet). But what he and Isabelle know that others don't, is that, piece by piece, Riddle's soul has been destroyed over the years. Both knew where to find each part of the severed soul, then of course knew when it was killed.
The last two were just destroyed inside the castle, and now only Riddle remains. Going into the middle of a battle is not the thing that's on the young hero's mind though, but how to make a flashy appearance as requested by his wife. Though wizards and demigods know nothing of each others' existence, that doesn't mean that the certain power of Hades' children isn't remarkably similar to necromancy.
In the Great Hall, the two people of the prophecy circle each other while specters from both sides watch, awaiting the outcome. But when a giant crack formed in the very center of the Great Hall, separating the two, all movement stopped. Just then, the crack split open with green flames coming out in an inferno. A dark figure began to rise out when all the room became dark, only being lit with the green flame. When the figure fully rose out of the ground, the crack closed as if it was never there, and the hall was once again brightened with light, revealing just who the figure is.
A tall, muscular boy, with shaggy black hair and pale skin. His eyes were so dark, they look like black pits that wish to send you to hell and a smirk on his face saying that its exactly what he is gonna do. In his hand is a sword just as dark as him that seems to pull the shadows towards it, giving it an eerie look.
The boy then turned and looked at the Dark Lord, before speaking in a bone chillingly calm voice, "Tom Malvolo Riddle; by decree of Lord Hades of the Underworld, I, Nico Di 'Angelo, son of Hades, Ghost King and King of the Tide, am here to execute you on charges of attempting to gain immortality and for cheating death seventeen years ago. Prepare to die."
The person in question was glaring at the boy, who they now know as Nico, through his speech and is now with a heaving chest. "Very funny boy, but I cannot die. And I posses the elder wand! No mortal can slay me!"
No sooner than the last word left his mouth than the elder wand suddenly split in two while still held in the Dark Lord's hand. There were gasps from the people in the crowd around them as Nico's figure was now closer to the Dark Lord, with his sword held at the ready. "Good thing I'm not mortal." he said with a truly evil grin on his face. Then, he charged. Slashing, slicing and jabbing, Nico's movements were fluent as cuts littered the skin of his opponent.
It wasn't until Riddle tripped and fell onto the floor, that the assault stopped. But then Nic placed his foot square on his chest to assure that he wouldn't be getting up anytime soon. Leaning over slightly Nico stated, "Death always has a way of reclaiming what's rightfully his." before plunging his sword straight into his heart. When he extracted the sword from the body, it was covered in blood that began to simmer and sizzle until the blade was once again, a clean shiny black.
The body of Tom Riddle burst into green flames and burned until there was nothing left of him; not even the ashes. The crowd consisting of order members, teachers, students, and death eaters, was staring at Nico in awe and terror, not sure of what to do next.
The object of everyone's gaze turned his stare, which they found to be a constant cold hard glare, back towards the crowd, scanning over the people's faces. "Tom Riddle is dead now, so all those that were his followers have a few options. One; flea now and forever be a wanted criminal in your society. Two; turn yourself in and face whatever charges you have coming to you and redeem yourself. Or three; fight on right now and experience the same death as your leader. Choose now."
All at once, several death eaters took their leave, though many stayed surprising those there. "I'm sure that your punishment shall be lessened thanks to your courage on the path to redemption. I'll leave you with this advice: don't try to obtain immortality or you'll have to answer to me."
And on that note, Nico opened yet another crack in the ground, burning with the green flame, and jumped in. As soon as his figure disappeared below, the crack closed once again, leaving the still frightened wizards to stare at it. As the feeling of shock wore away, a new feeling of victory set in. Before long, the applause and cheering started. Nico is just as happy to tell his father the good news of a job well done.