Night had fallen over the shabby alleyway where dim streetlights flickered above tangled power lines and cracked concrete walls. Inside a small room at the end of the row, Trang—a tough tomboy with a no-nonsense streak—had just finished her bath. She laid out a humble dinner: crispy chili-salted fried fish, boiled morning glory, and sweet leaf soup. Neatly covering the dishes with a bamboo food cover, she called out as she walked toward the far room where ?ng Nhan and H?ng Nhung stayed.

  – “Hey, ?ng Nhan! H?ng Nhung! Dinner’s ready. Fried fish with chili salt today—your favorite, ?ng Nhan!”

  But as she neared the window, Trang froze. Her breath caught in her throat.

  Through the hazy glass, she saw a sight that sent her heart racing.

  ?ng Nhan—the frail 70-year-old scrap collector—was gone. In his place stood a tall, imposing man, exuding a cold, noble air like a sovereign of darkness. His sculpted features glowed under amber eyes that shimmered in the gloom. His platinum silver curls were tied neatly behind his neck in the style of ancient nobility, and atop his head were twin spiraled horns crowned with a radiant gemstone-studded tiara. A black halo spun slowly behind him, pulsing with ominous light.

  Beside him was H?ng Nhung, no longer in her human guise. Her true form—a Northern Realm fairy—shimmered in the lamplight. Her chestnut brown hair cascaded in gentle waves, framing porcelain skin that glowed faintly. Her pink crystal-like eyes sparkled like rose quartz, and a pair of iridescent butterfly wings fluttered softly behind her.

  Trang instinctively took a step back, eyes wide but unwavering. She had weathered too many storms to crumble easily. Still, her voice trembled with awe:

  – “?ng Nhan...? H?ng Nhung...? What… what is going on?”

  H?ng Nhung turned gently at the sound of her voice, her tone as soft as a morning breeze:

  – “Trang… don’t be afraid. I’m still the same H?ng Nhung—your best friend. It’s just… there are things you didn’t know.”

  Then, ?ng Nhan—now in full regalia, every inch a king of the underworld—stepped forward. Despite his fearsome identity as Satan, his eyes remained calm, kind… warm, like the father figure Trang had always cherished.

  – “Trang, I’m sorry. I’ve kept this secret far too long. But I can’t hide it any longer.”

  – “I… am Satan. The King of Hell. Lord of the Shadow Realm. But above all… I’m your adoptive father. I’ve been watching over you, protecting you… every step of the way for the past five years.”

  Trang bit her lip, her eyes brimming with a storm of emotions—but not tears. She looked straight at ?ng Nhan, then at H?ng Nhung—the two people she trusted most:

  – “So… this whole time, you were both hiding your true selves from me?”

  H?ng Nhung approached and nodded solemnly.

  – “We didn’t lie to you, Trang… We chose to live beside you. To protect you. Because you’re not just some ordinary girl… You carry the fate of three realms: Heaven, Humanity, and Hell.”

  Trang clenched her fists. No tears. Just a long, steady breath—like a warrior readying herself for battle. Her voice, though quiet, rang with steel:

  – “If you both saw me as family… then I want to know everything. Tell me the whole truth. No more secrets.”

  And in that moment, Satan’s golden eyes gleamed with pride—a rare light reserved only for those worthy of both shadow and salvation.

  Under the warm yellow glow of a modest room in the old alley, Trang stood before two people she loved—both bearing identities far beyond human comprehension. She looked straight into the eyes of ?ng Nhan—now revealed as a regal, dashing version of Satan, his gaze as deep as the abyss of hell, yet still brimming with the gentle warmth of a father.

  – “Nhung… I feel like I’ve stepped into a Hollywood film set, not a rundown alley in Bình Th?nh,” Trang joked, half-playful, half-stunned.

  H?ng Nhung couldn’t help but giggle, her iridescent fairy wings fluttering with the rhythm of her laughter. ?ng Nhan offered a soft nod, his voice calm and affectionate:

  – “It’s not a dream, nor a movie. Everything you’ve seen is real… my daughter.”

  – “Tomorrow, we’ll move to my royal base in Bình Chánh. There, you’ll meet Crown Prince Arian—my biological son—and the Grand Mistress Advisor, who guides our royal council. They will tell you everything. Every single truth.”

  Trang narrowed her eyes playfully at H?ng Nhung, a sly smile on her lips.

  – “And you? Weren’t you renting a place a few blocks away? I’m not letting you live all alone anymore.”

  Before H?ng Nhung could reply, ?ng Nhan interjected with a gentle tone:

  – “No need to worry. H?ng Nhung will also be returning to the Bình Chánh stronghold with us. She’s a celestial fairy under my protection—I won’t leave her unguarded while the world is shifting beneath our feet.”

  He paused, his eyes twinkling with a father’s mischief, before glancing directly at H?ng Nhung:

  – “Besides… that way, she’ll get to see my son every day.”

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  H?ng Nhung’s face instantly flushed red—her cheeks blooming like ripe tomatoes. Her rosy eyes shimmered as she shyly avoided everyone’s gaze. Trang stared at her best friend in disbelief, mouth agape:

  – “Wait—are you and Crown Prince Arian…?”

  H?ng Nhung’s voice was barely louder than a whisper:

  – “I-I didn’t say anything… okay?”

  ?ng Nhan chuckled contentedly, clearly pleased, like a father who had just found the perfect daughter-in-law.

  – “Let love blossom in its own time. In a world tangled with conspiracies, a pure heart is the rarest treasure.”

  Standing between them, Trang felt a strange calm wash over her. It was as if the world had whispered a quiet miracle into her life. An orphan raised in hardship… now found herself part of a powerful family in the shadows—with a father, a best friend, and a destiny far greater than anything she had ever imagined.

  In the dim golden glow of the modest boarding room, the three figures—a Demon King, a celestial fairy, and a girl destined to carry the fate of three realms—continued their conversation, laughter echoing softly between the walls. But the lighthearted air suddenly turned tense when Trang paused, her eyes widening in alarm as she glanced around the room.

  – “?ng Nhan… aren’t you and H?ng Nhung worried someone in the neighborhood might see you like this?”

  At her question, ?ng Nhan gave a calm, knowing smile. His voice, warm yet laced with undeniable authority, resonated in the room:

  – “My dear daughter, everyone in this alley is a royal mafia intelligence agent. This entire neighborhood—down to the rusty light post and peeling walls—is actually one of my covert bases on Earth.”

  H?ng Nhung froze, her mouth agape, eyes round as saucers like she had just been doused with a bucket of cold water:

  – “Wait… all this time I’ve been visiting here, and I didn’t know a thing?!”

  ?ng Nhan leaned his chin on his hand, his expression playful:

  – “That’s exactly how you recognize skilled agents. Oh, and... aren't you two going to start calling me Father Emperor now? One of you is my officially adopted daughter, and the other… well, the future daughter-in-law.”

  As those words left his mouth, it was like lightning struck H?ng Nhung on a clear day. The petite fairy, glittering with stardust, blushed furiously from her ears to her neck. Even her shimmering butterfly wings behind her sparkled with soft pink hues, betraying her flustered heart.

  Trang let out a chuckle, scratching her head awkwardly. After a deep breath, she straightened her posture and looked directly into ?ng Nhan’s eyes.

  – “Yes… Father Emperor.”

  ?ng Nhan roared with laughter, his deep, regal voice vibrating through the room, echoing off the walls like a wave of proud thunder:

  – “Now that’s what I expect from my daughter!”

  H?ng Nhung lowered her head, her voice almost a whisper, cheeks still bright red:

  – “…Father Emperor…”

  His gaze softened, full of satisfaction. The two girls—one fierce like fire, the other gentle as the breeze—had now fully stepped into the shadowed realm over which he reigned.

  Outside, night had blanketed the alley. A rundown slum to the untrained eye… but in truth, it was a secret stronghold of the royal mafia of Satan—the humble beginning of a looming war between the underworld and the realm of light.

  The night sky above the humble alley sparkled with stars, and a cool breeze drifted through the air. Trang, cheerful and carefree, was carrying a tray of food from her room, planning to share dinner with ?ng Nhan and H?ng Nhung on the stone bench outside. But as she stepped through the door, she suddenly froze in place, eyes wide as she stared upward into the glimmering starlit sky.

  – “H?ng Nhung! Come out here, quick… look! A shooting star! This is the first time I’ve ever seen one in real life!”

  Hearing her excited shout, H?ng Nhung rushed over and looked in the direction Trang was pointing. A radiant streak of light tore across the heavens, a glowing trail arcing like a silver arrow slicing through the night. It shimmered like celebratory fireworks on New Year’s Eve. But ?ng Nhan’s expression had darkened. He stepped slowly behind the two girls, his voice deep and commanding:

  – “That’s no shooting star… The Dark Diamond has arrived. Girls, prepare yourselves—we’re leaving tonight.”

  Without another word, he raised his hand and clapped three times into the quiet night. Instantly, the familiar neighbors of the boarding house revealed their true forms—each and every one a black-armored agent of the Royal Mafia of Satan. The moonlight gleamed coldly off the steel of the long swords strapped to their sides. In perfect unison, they saluted with voices like the toll of infernal bells:

  – “Greetings, Lord Sovereign, Princess, and Fairy H?ng Nhung!”

  Trang stood frozen, jaw slack, heart pounding. Everything was happening so fast. But H?ng Nhung didn’t hesitate. She grabbed her friend’s arm tightly, her voice urgent:

  – “Quick! Pack your things—we’re going to the main base in Bình Chánh!”

  ?ng Nhan’s tone turned sharp, his amber-gold eyes glowing with cold intensity:

  – “The Dark Diamond is here—the one who once plotted to overthrow me.

  Everyone! Evacuate immediately. Leave no trace behind.”

  The agents dispersed with precision, each performing their assigned roles. In small groups, they activated hidden magic circles embedded beneath the alley floor, teleporting out in flashes of dark light. Above them, the sky remained bright, pierced by that searing trail of energy, an arrow of destruction speeding toward them.

  ?ng Nhan clutched a bracelet of ancient frost jade in his palm, the beads humming with raw energy. His eyes reflected a glint of something deeper than vengeance—the calm before war.

  Tonight, true darkness had begun its descent… and it was approaching fast.

  Atop a towering skyscraper in the heart of dazzling Saigon by night, the streets glimmered like shifting galaxies—each headlight and lamp flickering below like stars in motion. Standing silently at the edge of the rooftop was a jet-black figure, towering against the sky—Erion, the Dark Diamond of royal rank, the ancient demon who once sent the entire Northern Inferno Realm into trembling chaos.

  His appearance remained untouched by the thousand years of imprisonment. Erion, at 6'2" (1m88), bore a sharply sculpted physique and obsidian-black skin that gleamed like polished volcanic stone. His chiseled features exuded a cold, noble elegance. Twin crimson eyes glowed like rubies in the dark. From his head spiraled two glossy black horns, and between them sat a crown of black diamonds—the silver gleam of the stones twinkled like a faded moon.

  Dressed in a simple gray sweater and fitted black pants, he wore no extravagance—for his very presence was royalty enough.

  Erion stood motionless. The night wind brushed past his striking face and sculpted body. His ruby eyes gazed down upon the brilliant city below—a living world full of laughter, love, ambition, survival. The humans below had no idea that an ancient nightmare had reawakened above their quiet peace.

  – “One thousand years…”

  His voice was colder than primeval frost—each word crystallizing the very air.

  – “Everything has changed… But I’ll catch up soon. There’s no need to rush.”

  He took a slow step forward, his boot settling lightly upon the dust-covered rooftop.

  – “Satan...”

  His lips curled into a twisted, cruel smirk.

  – “You sealed me in the Nether Abyss—a place without light, without sound, where time itself ceases to exist... for an entire millennium. And now, I have returned.”

  – “I will find you. And I will repay you... a hundredfold, a thousandfold for what you’ve done to me.”

  He tilted his head back, eyes blazing like twin stars lost in a void. Below him, the lights of the city continued to twinkle. The human world remained blissfully unaware.

  But in the heavens above and the depths below, something had awakened.

  An ancient darkness had risen—and the war of the infernal realms had officially begun.