A mass of unheated azure flame covered the entire servoskull. Like a venomous snake, the wildly twisting inferno continuously burrowed into every conceivable opening, penetrating the skull's interior.
Although Nakamura Takashi was muted, judging by the violently shaking and twitching skull, this was undoubtedly an extremely painful process.
The nearby monitoring equipment showed that the temperature of the brain inside the skull had already reached 41 degrees Celsius and was still climbing.
This was an abnormal reaction; there must have been a flaw in Kenmyo Isayama's Psychic Spells.
Previously, Kenmyo Isayama had not used this memory-querying technique on Nakamura Takashi because he was a novice and not very proficient.
If the technique caused brain death, then merely tormenting Nakamura Takashi's soulless body would not bring Kenmyo Isayama any psychological satisfaction of revenge.
After Nakamura Takashi endured the agonizing torment of his soul being torn to the brink of rupture, Kenmyo Isayama managed to activate the technique just before the psychic energy spiraled out of control.
The azure flames created a bridge between Kenmyo Isayama and Nakamura Takashi, but it was a one-way street; only Kenmyo Isayama could view his memories.
A screen appeared before Kenmyo Isayama. The Psychic Spells's modification had turned Nakamura Takashi's memories into a film format. By dragging the progress bar, Kenmyo Isayama could access Nakamura Takashi's memories from any time period.
He had no interest in Nakamura Takashi's upbringing or his memories before he became a psychopath, so he fast-forwarded directly to the part he truly wanted to see.
"The day my sister was murdered."
A pang of pain shot through Kenmyo Isayama's heart at the thought.
As a victim's family member, personally reliving the victim's tragic experience was purely self-destructive.
It was like tearing open a wound that had already healed.
Kenmyo Isayama took a deep breath and clicked on the large screen. After entering playback, under the influence of the technique, Kenmyo Isayama directly entered that scene.
However, unlike the dark alley on a rainy night he had imagined, Kenmyo Isayama found himself in a luxuriously decorated living room.
The exquisite furnishings were now scattered with various messy items, showing signs of violent smashing and struggle. Large patches of splattered blood stained the white walls, some even reaching the ceiling, a truly horrifying sight.
This was clearly a terrifying murder scene!
Kenmyo Isayama inadvertently glanced at the debris at his feet and locked eyes with a decapitated head, its eyes wide open in death, unable to rest in peace.
The face, extremely distorted from inhumane abuse, was covered in bruises and hints of decay. Being stared at by the victim's fearful and helpless eyes from before their death would send shivers down anyone's spine.
Kenmyo Isayama was a bit startled, but he quickly realized this was not his sister's head, as his sister never wore such a headpiece.
Instead, it resembled the idol who was the first to die at Nakamura Takashi's hands; her purple long hair was matted together, making her original appearance unrecognizable.
If nothing unexpected happened, the large black garbage bag in the living room should contain the victim's torso.
If the progress bar was wrong, he would just close it and re-enter.
Kenmyo Isayama adjusted the progress bar again, and when he reopened his eyes, he appeared in an alley.
The scene before Kenmyo Isayama almost choked him. The walls of the dim alley were now also splattered with blood.
A torrential rain was falling, and the rainwater quickly accumulated in a large puddle in the poorly drained alley.
At Kenmyo Isayama's feet lay a single outdoor leather shoe, the kind worn by girls, silently in the rainwater.
Its strap was broken, and the wet label inside faintly showed the two characters for Sakura.
Before Kenmyo Isayama's eyes, it was as if a panicked girl was running wildly in the rain, then fell heavily, and continued to run without even caring about her accidentally broken shoe.
His sister's phone also lay casually on the ground, its lit screen showing a photo of his sister and him, now stained with blood.
"Hahahahaha."
Nakamura Takashi's excited laughter reached Kenmyo Isayama's ears. As the scumbag's body swayed, his hand rose and fell, and a slender arm dropped to the ground.
"Drip," it fell into the mixture of blood and water, quite distinctly.
Kenmyo Isayama clenched his fists, gritting his teeth. He gazed at the scarred arm, and on its wrist was the four-leaf clover bracelet he had given his sister for her sixteenth birthday.
At this point in the memory, Kenmyo Isayama could no longer bear to watch.
He was afraid; he was afraid to walk over and see his dying sister, calling out Kenmyo Isayama's name with her last breath.
But he could do nothing but watch his sister die.
Fortunately, half of Kenmyo Isayama's objective had been achieved. He now knew why there were traces of Cursed Energy on his sister's dismembered body.
It was the blood-soaked Bone-Cutting Knife in Nakamura Takashi's hand. That was a special Cursed Tool, and the Cursed Energy fluctuations it contained made Kenmyo Isayama's heart chill.
It was definitely a Grade 1 or even Special Grade Cursed Tool.
Cursed Tools are weapons inherently imbued with curses and Cursed Energy, and like Jujutsu Sorcerers, they are classified into Grade 4, Grade 3, Grade 2, Grade 1, and Special Grade.
Special Grade is the highest standard. Kenmyo Isayama's Isayama Family's heirloom sword, "Nue," is a Special Grade Cursed Tool.
It's strange, though. The Jujutsu Sorcerer Association only has one Special Grade Jujutsu Sorcerer, yet there are several Special Grade Cursed Tools, each with its own peculiar Cursed Technique.
Every Jujutsu Sorcerer yearns to possess their own Cursed Tool. Internal demand far outstrips supply, so how could one have fallen into civilian hands?
The probability of such a high-grade Cursed Tool appearing in the hands of an ordinary person is infinitely close to zero.
Furthermore, after Nakamura Takashi's arrest, the whereabouts of that high-grade Cursed Tool became unknown.
At this thought, Kenmyo Isayama immediately canceled the playback of this memory again.
Instead, he searched Nakamura Takashi's memories for information about this Bone-Cutting Knife.
Considering the possibility of it being a family heirloom, he searched for a long time, from childhood to adulthood. Kenmyo Isayama even knew how many times Nakamura Takashi wet the bed, but he couldn't find any trace of this knife in his memories.
At the same time, Kenmyo Isayama discovered during his search that this ominous Bone-Cutting Knife was also responsible for cruelly killing the idol Cursed Spirit.
It was as if this knife had appeared out of thin air in Nakamura Takashi's hand; it was truly absurd.
Thus, Kenmyo Isayama came to a conclusion: Nakamura Takashi's memories had long been tampered with by someone with ulterior motives, making him forget all origins of this knife.
But was Kenmyo Isayama a pushover? He was determined!
Finally, he found it: a scene in Nakamura Takashi's memory that was full of incongruity.
Although it was just a memory fragment, Kenmyo Isayama saw a woman whose face was unclear but who had very distinct stitches on her forehead, saying something to Nakamura Takashi.
One second he was normal, the next he became utterly deranged.