Tian Bufan listened with great interest to Lin Yi's deductions and noticed Lin Yi had stopped talking, so Tian Bufan said, "Actually, there might be a scenario that could explain why he opened the door... Do you recall hearing calls from those human sculptures on your way back to the dormitory building?"

"Something like... 'Stay away from one of your companions, I am him, he is a fake' kind of voice?"

Upon hearing this, a sudden bright white light flashed behind Lin Yi's head, he indeed had heard similar voices!

It happened when he turned his head and saw that the fake Wei Liang was still lying on Wei Liang.

"You're saying... Song Rentou returned to the dormitory, and his roommate went to take a shower, then he heard a call from outside the door saying something like 'Old Song, he's not your roommate, I am your roommate, he stole my Student ID card, let me in, I'll deal with him,' and then he opened the door?"

"Yes." Tian Bufan said, "Do you think that's possible?"

"This..."

"Don't rush to deny just yet, hear me out."

"First, let's simulate an environment... Normally, this would not be possible, so we assume it was a foggy day similar to tonight."

"Song Rentou and his roommate were coming back under the mist, to prevent losing themselves, they definitely would've kept repeating their names, student numbers, and the fact that they were hurrying back, changing it to 'heading back to dorm number such-and-such' once inside the dormitory building."

"This also gave those human sculptures a chance to capture this information."

"By the time they reached their room, after everything Song Rentou had gone through on the way, he was already highly tense. That's when hearing 'Song Rentou, don't trust so-and-so, he's fake, I'm the real one, quickly open the door, I'll handle him,' from outside didn't require him to believe it, just a flicker of doubt was like planting a bomb."

"And that bomb, when someone's mental resolve isn't strong enough, could be set off by many unnoticed little details, like... if one of his roommates always had a habit of brushing and washing up before bed, but didn't that day."

"Once he started to doubt the authenticity of his roommate, he could gradually be manipulated by those voices from outside, eventually making him open the door."

"Once he opened the door, it was like inviting them in."

"You can't predict whether a person, who is becoming paranoid, would act out abnormally due to impulse... put yourself in that scenario, think about it, it's a foggy day, shadows appear menacing, the whole dormitory feels off, your ears full of noises disturbing your spirit. Good and bad sounds everywhere, and one keeps telling you your roommate isn't really your roommate. Could you still sleep?"

"Think about the girl at the cafeteria entrance who had a mental breakdown, do you think she could have overcome that suspicion and not open the door?"

"Impulse is like the devil, once the idea sprouts, it's uncontrollable."

Lin Yi pondered: "Wouldn't his roommate stop him?"

Tian Bufan slightly shook his head: "From a behavioral psychological perspective, once Song Rentou harbored that thought, unless several roommates forcibly held him down, nothing could stop him. Because the more you try to stop him, the more Song Rentou would believe that the person outside is the real roommate, and the one inside is not."

"When you unilaterally believe in a lie, the truth becomes an excuse."

"Moreover… what if the situation back then was even more bizarre? What if every person in the dormitory heard similar voices, but only Song Rentou left a note, and if he hadn't left a note, we would never even know about it?"

"An entire dormitory's people, all mentally disturbed, everyone suspicious and paranoid. Then, hearing such voices from outside... opening the door became a collective expectation, everyone tacitly agreed on it."

"So... someone opened the door, and that person might not necessarily be Song Rentou."

"Once the door was opened, the Non-human Classmates poured in, dragging each person from this dormitory out one by one."

"Those being dragged out must have struggled to come back, but those left in the dormitory definitely fought to close the door, leaving them to be killed by the Non-human Classmates."

"There might still be others left in the dormitory, or perhaps only Song Rentou was left alone... As for why he survived, he might have pretended to sleep on the bed—remember, even if you pretend to sleep, as long as you ignore what's happening outside, you can still achieve a safe state."

"Once the non-human classmates left, he quickly shut the door."

"He thought he was safe, but after those non-human classmates killed his roommates, they turned their attention to another roommate who was taking a shower."

"But Young Master Tian..." Lin Yi thought of a loophole, "how did Song Rentou evade the targeting of the non-human classmates?"

"There's an explanation that's a bit far-fetched but still reasonable. Do you want to hear it?" Tian Bufan mysteriously narrowed his eyes.

"You... let's hear it?"

"Throughout the entire dormitory, only Song Rentou managed to go the whole trip without mentioning anything related to his name or student number. He probably only said things like 'I'm returning to the dormitory building,' 'My dormitory building is 1414, I am returning to the dormitory'..."

Lin Yi felt a chill down his spine: "Are you saying, Song Rentou circumvented the tracking logic of the human sculptures and non-human classmates?"

"It's not impossible," Tian Bufan said, "Here's where it gets interesting, he was able to cling to the anchor of his dormitory through his mental breakdown, rather than anchoring to his identity, which allowed him, at a critical moment, to sacrifice his roommate's life to save his own."

"Isn't that far-fetched? So, it makes sense if he says 'I killed someone,' doesn't it?"

"However, after he locked the door of the dorm, the non-human classmates did not leave but lingered at the entrance, still muttering the identity information of his roommate who was still showering in the bathroom."

"At that time, Song Rentou knew that no matter who outside was real or fake, eventually someone would get a student ID card and swipe it to come in."

"And he had to figure out a way to fall asleep before then, because in the dormitory, only 'sleeping' is absolutely safe."

"However, he was afraid the roommate from the bathroom would find it strange after coming out. After all, everyone in the dormitory was harmed, and here you are, Song Rentou, perfectly fine and sleeping. Does that make sense? Completely unreasonable."

"To eliminate this factor, he first secretly opened the bathroom door, then went to open the dormitory door, and when the non-human classmates came in, he chose to 'ignore' them and got into bed, pretending to sleep, waiting for the non-human classmates to find the bathroom and finish off the last roommate, and only afterwards he went to lock the door."

"After all these actions, his mental state did not improve at all, but became increasingly unstable, which is why he hastily wrote down this vague note."

"But when he was writing the note, he realized that those non-human classmates still had not left..."

"But all his roommates were already dead, and he finally began to doubt himself, hence those later words."

"Am I right... Kuai Kuai?"

Tian Bufan said, and just then the bathroom door suddenly opened, he immediately looked up with an inquiring expression.

Lin Yi was startled and then realized that the sound of water in the bathroom seemed to have stopped for a little while.

Kuai Hongji, who had dried off and changed into pajamas, walked out of the bathroom, glanced at them, then offered his opinion: "I heard... the beginning part, it's pretty much what I thought, but... what makes you think they need to drag people out of the dormitory to kill them?"

"Huh...?" Lin Yi was taken aback.

Kuai Hongji slightly narrowed his eyes: "You all are still too naive, what I've thought of... is much darker than what you've considered."

He looked at Tian Bufan: "I don't believe you couldn't have thought of it, you just purposely waited for me to say it, didn't you?"

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