Help! I changed the gender of the male protagonist in the yandere game

Spiritual power "reserves" are basically innate and hardly increase after adulthood.

Considering she couldn't help her subordinate with that, she focused her energy on increasing his resistance to poison—the human-headed spiders of the "Spider's Nest" possessed a demonic poison that was a threat even to proper exorcists; even that kid from the Tsukigahara family was poisoned.

For Hyakusuke, a low-level ninja with such poor abilities, to be able to hold out for so long after being bitten before the demonic poison erupted was because Kazura had spent so much effort building his poison-resistant body.

"You must think I'm bullying you by constantly giving you drugs, huh?"

The girl looked at his sleeping face with affection, her pupils becoming hazy as if in a trance as she thought of her beloved's troubled appearance, and a sadistic smile appeared on her lips.

Kazura had to admit that she enjoyed seeing him in distress.

But on the other hand, it was also genuinely to help him.

Through long-term drug adjustments, Hyakusuke's body had extremely high resistance to drugs and toxins… but of course, that alone wasn't enough.

Kazura was also using drugs to strengthen his resistance to magic, enhancing his physical adaptability to give him a degree of immunity and resistance to the offensive spells of demons and human sorcerers.

In addition, she was secretly modifying his speed, reflexes, and flexibility.

When injured, his body's regeneration mechanism would also be stronger than that of ordinary people.

In fact, Kazura also knew many ways to strengthen humans tenfold, giving them superhuman strength—those were forbidden arts that could only turn people into inhuman monsters, transforming them into demons or aberrations.

She didn't plan to turn her beloved into such a state; if she did, he wouldn't be able to achieve success in the surface world and rightfully marry her.

'Oh, right, there's also endurance; muscular endurance and cardiovascular endurance have also been enhanced accordingly, and of course, there's endurance in that area too.'

Kazura considered herself a maiden with a budding heart, and her requirements for her beloved were naturally "heroic and extraordinary, understanding and considerate," even requiring him to show exceptional prowess in bed during nighttime hours—

"Let's increase the dosage."

Giggling to herself, Kazura covered her mouth with her long sleeve.

Filled with anticipation for the future, she hid the pill concealed in her sleeve under her tongue.

"…There's no tea here, so I'll just have to feed it to him directly."

The girl held the special pill in her mouth, her small and red tongue flicking it around, planning to feed it to him mouth-to-mouth.

Her eyes were like those of a pure maiden in love, yet also as turbid as those of a drug addict, and her mind was filled with fantasies.

Don't worry, I will lift you back to a high position.

I will help you get back everything you lost in the past.

After that, we'll strip the entire Kurohimeyama family of everything they have together, and I'll offer you and dedicate to you whatever you like…

Kazura was moved by her own idea of "dedication," imagining herself literally offering him everything, a bewitching smile leaking from the corner of her mouth.

Suddenly, a dense killing intent erupted, and the air in the room permeated with an icy texture.

It was as if, in an instant, the air that had been breathable was replaced with some suffocating component.

Even Kazura, a powerful exorcist, felt her hair stand on end at that moment.

Her overly sensitive sixth sense made the girl acutely aware of the incongruity of the atmosphere.

"…It's a shadow, a shadow."

She suddenly looked down and noticed that the shadows of herself and the man on the tatami mats were overlapping, turning into a turbid darkness, as if this shadow had a suction force, like a swamp sucking at her hands and feet.

This bizarre scene only made the girl pause for a moment.

"I see?"

She snorted and sneered.

This must be that gloomy woman's arrangement, a "shikigami" hidden in the shadows, one that even she hadn't noticed at first.

The shadow on the tatami mats was expanding like sewage, and tentacle-like things were extending from the turbid, dark shadows that seeped into the ground.

Suddenly, a line of blood-red characters appeared from the black lake-like shadow.

—Do、not、touch、him…or、I'll、kill、you.

Through the shikigami hidden in the shadows, the Kurohimeyama family's eldest princess's intense killing intent, malice, and violent personality were revealed in this line of text.

"Kuku~~ She finally couldn't hold back any longer."

Kazura chuckled, covering her mouth with her sleeve, and a sinister voice slowly sounded, "I thought you could keep pretending to be stupid, but I didn't expect you to show your true colors so soon."

—He、is、mine.

Kazura, who had been adopting a mocking attitude, could no longer maintain her previous smile; her brows and the corners of her mouth were filled with anger.

Yours?

She bit her lip tightly, barely suppressing her seething emotions.

It's because of the good deeds you did in the past, you bitch, that he's become like this now… If it were me, if I had met him first, he definitely wouldn't have become like this—

Kazura also emitted a strong spiritual power wavelength, staring intently at the blood-red characters, the ghostly fire ignited in her eyes revealing the fierce gaze of someone who had crossed the boundary between normal and insane.

Buzz…

The atmosphere was affected by the two super-class exorcists, and the heterogeneous air began to be distorted. The excessively strong spiritual power emitted interfered with the material world, and the air molecules around vibrated at high speed, causing an invisible strong wind to blow in the room.

Kazura's hair, which hung over her shoulders, scattered in the air, like an angry Hannya demon.

The expression on her face became increasingly ferocious, unyieldingly displaying hatred and anger, like a dark nebula, her whole body exuding a frightening black aura.

—I、will、definitely、kill、you.

—It's、only、a、matter、of、time,、it、will、happen、someday.

As if staring at each other from a distance, the two half-sisters confronted each other through the shikigami; suddenly, the man lying on the ground let out a painful groan, the sound of his breathing becoming difficult.

Not good.

The phenomenon caused by the excessive confrontation also affected Hyakusuke; probably noticing this, the two sisters simultaneously withdrew their power.

"Okay, it's alright… Have a good sleep."

Kazura reached out to soothe the sleeping man, like comforting a baby. She was very sure of the amount of medicine she had used, enough to make the man sleep until dusk.

"That woman…"

Her lowered gaze coldly stared at the shadow shrinking back into the ground.

Kazura knew that her sister wasn't playing this trick with the intention of just a warning. That woman's killing intent was genuine.

"…The ability to manipulate shadows didn't exist before; has that woman acquired a new 'shiki-katana'?"

Kazura bit her thumb in frustration.

That bitch's power has become stronger again; she's forged so many demon blades that even I don't know the number anymore…

If she's given time, the woman with the power of Time Weaving will eventually have the power to oppose the entire clan, and when that time comes, she'll be the first to kill me.

However, the principle is the same; as long as I find her weakness, I will mercilessly erase her existence.

Eliminate rivals, eliminate obstacles, eliminate everything that stands in my way, even if it's my blood relatives, my mother, my sisters, or my closest people… This is the way of survival for the demon women of the Kurohimeyama clan.

"Sooner、or、later…sooner、or、later…I'll、definitely、do、it."

She muttered to herself with a gloomy expression, her voice so soft that no one could hear it.