Secret Magical Lovers: Yandere Isekai Novel

Slam!

The sharp sound of a hand striking the table echoed through the room.

The one responsible was none other than Yayoi, her face twisted in frustration, hands trembling with barely restrained anger. Just moments ago, her father had come to her and ordered her to stay away from Rin.

She couldn't believe it—her own father, telling her to leave Rin alone!

"Please, Lady Yayoi, try to calm yourself," a composed voice urged.

The speaker was an elderly woman dressed in a neatly pressed maid outfit—Miharu, Yayoi's longtime nanny and caretaker. A look of sorrow crossed her face—the quiet pain of a mother watching her child suffer.

She had raised Yayoi since her mother passed away when she was only four. Their bond was more than that of a servant and master—it was that of mother and daughter.

"How can I calm down, Miharu?! Tell me how!" Yayoi snapped.

Rin was her heart, her love, her life. If there was anything she cherished most, it was Rin... no, she was much more than that.

With a sudden burst of rage, she grabbed the edge of the table and flipped it over.

Crash!

Porcelain shattered as teacups, plates, and a delicate flower vase smashed against the floor, water spilling across the fine carpet.

She gritted her teeth, her fingers tangling in her hair as she yanked at it in frustration.

Miharu, standing nearby with a sorrowful expression, let out a soft sigh.

"I understand how you feel, Lady Yayoi," she said gently. "But you must remember—Ezakiel is a member of the Graciór family. Most of your father's business dealings are tied to them, including major financial investments. If they were to withdraw their support, it could cause… serious trouble for us."

Yayoi's fists clenched so tightly that her nails dug into her palms.

"So please, stay away from Rin. She now has the protection of the Graciór."

Yayoi's gaze dropped to her hand, her breath hitching as she finally noticed the deep crescent marks on her palm. Blood trickled from the wounds, falling in slow, silent drops onto the floor, staining the rich carpet beneath her feet.

She raised her trembling arm, staring at the crimson streaks that marred her pale skin.

Her lips parted, a bitter, almost broken laugh escaping before she whispered, "Look what you made me do, Rin... Why? Why do you still defy me? If you were never meant to be mine, then why did you come into my life?"

Her voice wavered, but there was no mistaking the raw pain laced within it.

Miharu, who had been watching in quiet sorrow, gasped as she noticed the blood. Her composure cracked for the first time, her eyes widening in alarm.

"Lady Yayoi! Your hand—please, let me help you. Come, sit on the bed, I'll bring the first-aid kit immediately!" she urged, already moving to support her.

But before she could take another step, Yayoi's voice cut through the air like a blade.

"Get out."

Miharu froze. "Huh?"

Yayoi's dark eyes lifted to meet hers, sharp and unwavering, filled with something unreadable.

"I said, get out!" she snapped, her voice ringing with finality.

Silence stretched between them, thick and heavy. Miharu's lips parted as if to protest, but one look at Yayoi's expression made her stop.

Swallowing her sorrow, Miharu lowered her head slightly and took a slow step back.

Then, without another word, Miharu turned and left the room, the soft click of the door closing behind her barely audible over the silence that followed.

Yayoi stood frozen for a moment, her breath ragged, her chest rising and falling as if she had just run miles. Then, as if the last thread of restraint had snapped, her knees buckled, and she collapsed onto the bed.

Tears spilled from her eyes, hot and unrelenting, tracing silent trails down her pale cheeks. A choked sob escaped her lips, but it wasn't enough—it wasn't nearly enough to ease the pain clawing at her insides.

With shaking hands, she gripped the bedsheets, her fingers curling around the soft fabric. But instead of finding comfort, she tore into them, ripping the delicate linen apart. Feathers from the pillows scattered around her, floating like lost fragments of a broken dream. The mattress gave way beneath her fury, stuffing spilling out as she clawed at it desperately, her nails digging in deep.

A scream tore from her throat—raw, agonized, filled with so much pain it could shatter glass.

And then—it happened.

....

"Tsumi! You finally came," Mari said as she watched Tsumi step into the headquarters of Tokyo's magical girls.

The headquarters was an underground facility, hidden several stories beneath Summer Fall High. The air was cool, and the walls were lined with glowing runes that pulsed faintly.

"You are quite early, very early," Tsumi said as she walked forward and took a seat at the large circular table in the center of the room.

The table was carved from black obsidian, its smooth surface reflecting the dim glow of a neon-blue crystal chandelier hanging above.

"I wonder what has happened to call us all here. It's not like we gather unless something serious happens," Tsumi said. She snapped her fingers, and the chandelier's light turned red. "I like red more."

She leaned back slightly, resting her elbow on the armrest, her expression unreadable. "Tell me, do you know why we were summoned?" Her voice was flat, uninterested. "I was busy exterminating pests. Lately, I have been noticing more frequent attacks in my area."

."Nah, I don't know. Your sister didn't tell me, and why would she if she didn't even tell her dear little sister?" Mari smirked, crossing her arms as she floated just above the floor. "By the way, what about Ezakiel?" she asked, tilting her head slightly.

Tsumi barely reacted. "That's a matter for later," she replied plainly. "If I slack off, the headmistress might come after me."

She didn't want any interruptions when it was time to dissect Ezakiel. She had to know what kind of mystery he hid.

She couldn't explain in words how eager she was to do it.

Mari took her seat, but before she could say anything else, footsteps echoed through the chamber. Two more magical girls entered, their presence filling the room with authority.

The first girl had long black hair tied into a ponytail, giving her a refined yet commanding look. She wore the same frilly uniform as Tsumi, but hers had patterns that looked more traditional, almost like an ancient sorceress.

The second girl had her black hair down, reaching past her shoulders. Her outfit had an astronomy theme, decorated with constellations and cosmic symbols. She wore Zodiac charms on her waist and wrists, and a flowing cape draped behind her, carrying the symbols of the moon and stars.

As the two took their seats, the room grew silent.

Then Mari grinned and broke the silence.

"Yonoshita! Emawari!" she said, tilting her head almost unnaturally. "How long has it been since all four of us sat together for something?"

"It's only been two weeks since our last team-up to defeat that high-ranking demon," Yonoshita said with an annoyed expression. "And don't talk to me like we're friends."

"Oh, don't be like that," Mari said with a smile. Then, her face twisted into something eerie—her grin turning unsettling, almost psychotic. "Or do you really think you can do anything to me? Have you forgotten what I did to your predecessor? How I thrust my hand into her well-endowed chest, tore her heart out, and fed it to her?"

"You...!" Yonoshita's expression darkened, her eyes reflecting the same crazed energy. "Don't think you can kill me as easily as her. She was weak—that's why she died. But I am not. I'll kill you, body and soul, rip your limbs from your fragile body, stab you with them, and throw you to the dogs."

Before the tension could escalate further, Emawari interrupted, her voice cutting through like ice.

"Would you two shut up…?" she said, her face now carrying the same unsettling, psychotic grin. "You two are annoying."

Tsumi sighed, looking at the others with boredom.

It's very clear that I'm the only sane one here.

A sudden clap echoed through the room, making everyone turn toward the source of the sound.

It was none other than Yuki—Tsumi's sister. Unlike the rest of them, who were dressed in their elaborate magical girl outfits, Yuki wore her usual plain clothes. The contrast between her and the mystical atmosphere of the room was striking.

Tsumi blinked at her sister, staring blankly. "Sister… why have you summoned me here at this time?" she asked, her voice flat.

"This is an important matter," Yuki said.

"Oh…" Tsumi responded, showing little interest.

Emawari traced one of the Zodiac symbols on her sleeve. "Miss Yuki, is the matter really that urgent?" she asked.

Yuki crossed her arms and sighed. "You could say that."

Yonoshita narrowed her eyes. "Then why just us? Why didn't you call the others?"

Yuki's words carried a heavy weight. The four magical girls exchanged glances, their expressions shifting from curiosity to deep thought.

Yonoshita finally broke the silence. "So… what exactly is the problem?"

Yuki exhaled before speaking. "Two nights ago, during my usual patrol near a deserted highway on the outskirts of Tokyo, I detected a monster entering our plane of existence. It was weak—an Engage-rank creature, nothing unusual. But when I arrived… the monster's presence had completely vanished. Instead, something else had taken its place."

Yonoshita frowned. "A monster killing another monster? That's nothing new. Why does it matter?"

Yuki shook her head. "The issue isn't that the first monster died. It's that the new entity that appeared somehow managed to completely evade my detection spells. Its presence was masked—perfectly."

Mari raised an eyebrow. "Wait, seriously? But how is that even possible?"

"I don't know," Yuki admitted. "Later, I sensed it again—briefly—in Tokyo. Its presence was faint, barely there, and before I could pinpoint its location, it disappeared again. Almost like it erased itself from existence."

Mari leaned forward, resting her elbows on the obsidian table. "So what you're telling us is… there's a monster that can hide from detection and is freely moving through the city?"

"Yes," Yuki confirmed.

Yonoshita's expression darkened. "Then why are we only hearing about this now? Why wait two days?"

Yuki sighed. "Because I wasn't sure if this thing was even a monster. No creature should be able to evade my spells—not when my magic detects a being's very essence. And yet… it slipped past completely."

Tsumi, who had been silent, finally spoke, her voice as emotionless as ever. "If this monster is as dangerous as you claim… then why hasn't it attacked yet? Why isn't it slaughtering millions? Isn't that what monsters do?"

The room fell into silence.

Tsumi didn't particularly care about human lives, only about doing her job. But even she found it strange. If a creature like this truly existed—one that could move unseen—what was it waiting for?

Yuki's expression didn't change as she continued. "I tried to peek into its abilities and managed to see most of them."

The others leaned in slightly.

"Instant Death, Reality Warping, Telekinesis, Limited Matter Creation, Fire Manipulation, Teleportation… and, of course, the usual monster resistances—immunity to poisons, temporal distortions, memory erasure, and so on."

A heavy silence filled the air.

Yonoshita finally spoke. "What about its power level?"

Emawari frowned. "That's it? You're getting paranoid over nothing. It's weak as hell."

Yuki shook her head. "That's the problem. We've never encountered anything like this before. And worse… its power is growing fast. That's why I called you four—I trust you to handle it before it becomes unstoppable." She paused before adding, "And don't assume it's just Engage Tier. There's a very real chance it's hiding its true strength. It could easily be Demon Tier or higher."

The four magical girls exchanged looks before nodding in agreement.

Mari tapped her fingers on the table. "So… do you have any idea what it looks like?"

"No… but I know one thing," Yuki said. "It carries the aura of death."

Mari grinned. "Then… what should we call it?"

Tsumi thought for a moment before answering.

"Exsecrati Mortui."