That Time an American was Reincarnated into Another World - Chapter 4: Fireballs

What happens when a fanfic author with a habit of lying and scheming suddenly finds himself as a self insert during Duelist Kingdom? What happens when you have Yugi, Joey, Kaiba, and the rest encounter someone who knows all about every major player in their saga... and sees no problem with abusing said knowledge? Chaos, dear reader. Sweet, sweet chaos

In a world where strength determines one’s future, William, an orphan with no extraordinary talents, faces a grim destiny—until a brutal attack leaves him clinging to life. Instead of death, he awakens to a mysterious and powerful entity lurking within his mind: the Shadow System, a game-like interface that promises him unimaginable power. But this power comes with dark secrets, and refusing it would mean his death. Forced into a pact with a voice that can hear his every thought, William must navigate a dangerous new reality where shadow abilities and celestial power collide. As he enters the prestigious military academy, his newfound abilities draw both allies and enemies, all while a deadly conspiracy brews in the shadows. With the odds stacked against him, William must unravel the mystery of the Shadow System and decide whether to embrace the darkness within—or be consumed by it. His journey from a bullied outcast to a potential god will challenge not just his survival, but his very humanity. Power always comes at a cost—will William be able to pay the price? “What am I?” William asked the system. The system’s voice echoed in his head, cold and indifferent. “You are nothing.”

[You Have Been Chosen.]When the apocalypse started, everything fell apart. I lost my job before they pushed me out into the street. Facing the undead, I became desperate and ran like a coward.Until I heard a voice...At first I couldn't believe the voice, thinking I might be insane and finally lost it... But as I was about to die, I saw a strange game-like panel appear in real life![The Throne System has activated.]This strange system let me gain points by killing zombies and the ability to recruit people as subjects who wouldn't betray me like my previous co-workers.My first subject?Mu Qinglan.The ruthless Ice Queen CEO I once called “Boss.”Cold, untouchable... and now infected.As her bloodthirsty jaws closed around my neck, I barely saved her with the system’s makeshift cure.[Recruitment Available.][Subject: Mu Qinglan (S-Tier)][Press to Confirm.]A glowing button floated before me.I hesitated.Then, slowly, I reached out.[Recruitment Complete.]▼ Mu Qinglan's attributes are now visible.+ 100 Experience.+ Leadership: Level 1+ Random Skill from Mu Qinglan[Rank Up!]▼ Rank: Loser → Partner+ Attributes Increased | Subject Cap: 2Every subject I command strengthens me.Every kill feeds my dominion.In this world of death and chaos...I will build an empire of S-Tier Beauties and ascend as the Apocalypse King.

The Celestial War!A war that has been ongoing since time!Pyrrhus, the human god isn't left out. He's known for his might and greediness, conquering many stars and sectors!Kyle Lin, a boy of Zekkoa becomes the recepient of a system; one which Pyrrhus has sent as a help. Forced to reincarnate into a magic world, he must grow stronger as the world is at stake.Kyle must free himself of being a pawn and take power into his own hands. Witness his journey to become an Omni Mage!