[The structure of this device was very simple… just a long blackboard, but its surface was extremely smooth, accompanied by a box of chalk.]
[At first glance, it didn't look like an interrogation tool at all. Yet, only you could deeply understand how terrifying this thing truly was.]
[That's right. Some people cannot be subdued by pure violence alone… they require special methods, like using sound or smell.]
[The methods of Konoha's Interrogation Unit were too one-dimensional. Facing such stubborn opponents, they had no recourse. So, you took an indirect approach, thinking of this unique tactic.]
'Ah, this...'
Reading this, Takumi couldn't help but roll his eyes.
He roughly inferred what this device was.
A sound-based tool!
Using chalk to scrape the blackboard, creating that spine-chilling sound.
'Good grief, on his very first day on the job, he was pulling out a major technique?'
[Seeing this crude-looking device, the Kumogakure's Shinobi laughed mockingly. He clearly had never seen such high-grade equipment before.]
[But you remained completely unfazed, calmly securing him onto it.]
[Then, you did something utterly perplexing.]
[You opened the interrogation room door and walked out with a serious expression.]
[Ibiki and Hiruzen thought you had already finished the interrogation, but you replied that you needed to do some preparatory work.]
[Five minutes later, you returned wearing a brand new set of clothes.]
[Under the astonished gazes of everyone, you walked back into the interrogation room.]
[The Kumogakure's Shinobi was also dumbfounded, but only for a moment before he resumed his contempt for you.]
[Then, you began scraping the chalk back and forth across the blackboard.]
[Squeak~~ Squeak~~]
[An unbearable sound emerged.]
[Minute 1: His expression remained calm, and he continued to curse and mock you.]
[Minute 2: He felt nothing, just a bit more puzzled, not understanding what you were doing.]
[Minutes 3, 4...]
[By the time you reached minute 5, the Kumogakure's Shinobi began to feel that something was wrong.]
[Sweat started beading on his forehead, and his legs began to tremble.]
[Your face expressionless, you continued grinding the chalk against the blackboard.]
[By minute 6, the Kumogakure's Shinobi couldn't hold back anymore. He clenched his teeth, emitting faint panting sounds.]
[By minute 7, he finally couldn't take it. Goosebumps covered his entire body, and he shouted angrily for you to stop.]
[Outside the door, Hiruzen, Ibiki, and the others were shocked. They knew this Kumogakure's Shinobi had considerable willpower and an extremely robust body. He hadn't cared at all despite being whipped for so long.]
[Even Ibiki himself had taken action, using his Torture Chamber ability, tearing his own skin, but still failed to pry open the Kumogakure's Shinobi's mouth.]
[Yet you, without carrying any whips, chains, or canes, made him unable to withstand it and ready to surrender.]
[The Kumogakure's Shinobi was drenched in sweat.]
[He never dreamed that his tempered, resilient body could be so fragile!]
[There was nothing to it! It was just chalk scraping on a blackboard! But the effect was more severe than the beatings from the Interrogation Division's Chief!]
[And you, with your interrogation talent, understood perfectly well where the vulnerable points of the human body were.]
[Attacking just the muscles was useless, as muscles are arguably the sturdiest and most resilient part of the human body.]
[Knees, ligaments, pinky fingers... these are the places most prone to causing pain. There are too many points to attack.]
[Going a step further, there's hearing, smell, and even psychological attacks.]
[You could even induce physical discomfort in someone with just a brief description of a couple of sentences.]
[For example: Suddenly tearing off a hangnail.]
[For example: Kicking something and stubbing your toe.]
[For example: A nail has a chip, and it suddenly tears.]
[You understood the points of human pain too well. You knew how to maximize a person's pain without causing death.]
[You continued scraping the chalk against the blackboard.]
[The agonizing squeaking sound grew increasingly intense.]
[By now, the Kumogakure's Shinobi felt unbearably uncomfortable all over. Sweat poured out incessantly. The sounds of his struggle and anguish filled the entire interrogation room.]
[Even Hiruzen and the others outside felt creeped out. After giving a few instructions, they found an excuse and retreated.]
[You picked up paper and a pen, recording his pain threshold.]
[That's right. Taking notes was also one of your good habits.]
[You marveled inwardly, feeling that truly worthy of being a Shinobi, their physical resilience was so high. An ordinary person would have reached their limit after just a few sounds.]
[You began slowly adjusting your methods.]
[You stopped using the blackboard and chalk, switching instead to a knife and glass.]
[Because you knew that applying pressure at the edge of one's limit truly tested one's skill.]
[So, the sound of a knife scraping glass was equally, if not more, torturous.]
[You began scraping the glass with the knife, one stroke at a time.]
[Despite the complete absence of any bloody visuals, each scrape caused the Kumogakure's Shinobi immense suffering.]
[His expression had shifted from pain to panic. He begged you to stop. He passed out.]
'My god...'
Seeing his own terrifying actions, Takumi felt his scalp go numb!
'So ruthless!'
'Truly deserving of the top seat in the Interrogation Division!'
Without using any conventional tools, just chalk, a blackboard, a knife, and glass, just these four items were enough to make someone break.
Because it was a psychological assault!
Takumi was even starting to look forward to his own progress next...
[You splashed a basin of cold water, reviving the unconscious Kumogakure's Shinobi.]
[Then you resumed scraping the glass, occasionally switching back to the chalk on the blackboard...]
[You mechanically repeated the actions, working with utmost seriousness.]
[Seizing the right moment, you launched a psychological attack with an indifferent expression.]
[You told him that his death wouldn't matter, but if you found the other spies, you would let them taste this special set meal too.]
[When that time came, you would arrange for dozens of people to create these sounds around them, 24 hours a day.]
[Your words possessed incredibly terrifying destructive power, directly shattering the Kumogakure's Shinobi's psychological defenses.]
[Finally, after ten repetitions, the Kumogakure's Shinobi could no longer hold on. He agreed to divulge the information.]
[You frowned slightly, your expression seeming not entirely satisfied, but for the sake of professionalism, you still stopped.]
[Twenty minutes later, you cleaned up the tools, straightened your clothes, picked up your bag, and strode out the door with your head held high.]
[The entire Interrogation Division rushed into the interrogation room. All they saw was the Kumogakure's Shinobi, utterly broken and collapsed on the floor, without a trace of his former arrogance, resembling a little lamb that had been ravaged by a beast, and next to him, the paper with the spies' names he had written.]
[The place erupted. Everyone exclaimed in amazement.]
[And you, you were just silently washing your hands nearby, cleaning the water stains from your hands and glasses.]
[You changed your clothes, neatly folding the ones you had just worn and placing them in a bag.]
[You handed the bag to a young female Anbu's Shinobi, instructing her to dispose of it.]
[She looked at you as if seeing a deity, her eyes shining with light.]
"Ah, this..."
"Isn't this just too strong?"
Watching himself in this new life, Takumi was utterly stunned.
'Can interrogation be this cool?'
'Can it be this elegant?'
His every move, his every smile, was filled with that damn charm, wasn't it!
Similarly in the interrogation business, Ibiki followed the tough guy route.
He relied on his resilient willpower and his ball-busting endurance skill [Torture Chamber] to make enemies submit!
But you, using the simplest tools combined with the most skilled techniques and psychological attacks, could also crush the enemy!
[Your fame exploded. Hiruzen, Kakashi, Kurenai, Guy...]
[All of Konoha's elite members became aware of your existence.]
[Your interrogation workload increased significantly, mostly dealing with tough cases that others couldn't handle.]
[Before each work session, you would change into a new set of clothes. Sometimes you emerged from the interrogation room perfectly clean, other times, covered in blood, and sometimes, even with vomit or excrement...]
[But regardless of cleanliness, you would always change your clothes and hand them over to the young lady in the Anbu for disposal.]
[In the blink of an eye, three months had passed.]
[You ran into Naruto and Sakura while eating out.]
[During your conversation, you discussed your work a bit.]
[Naruto excitedly said he wanted to come and observe.]
[You nodded in agreement.]