"Here we are."

Xia Ren, accompanied by two A-class personnel, once again came to the entrance of the eighteenth floor.

One of them said, "The doctor has granted you clearance, now you can come and go freely, and we will wait outside for you to come out until we get you back to the hospital." ”

It seems that the last assassination made the Doctor take his safety seriously.

However, Xia Ren then thought that if this was the case, then his whereabouts in the past two days had probably been under the surveillance of the other party.

"Thankfully, I didn't really do anything to the containment."

Xia Ren stabilized his mind and came to the elevator door on the eighteenth floor.

He mimicked Dr. Liao's previous movements and pasted his identity token on the screen next to him.

[Permission authentication is enabled.] 】

[Special Permission Certification: A-level (Reaper)]

[Permission authentication passed, welcome.] 】

Unlike the cumbersome procedure that Dr. Liao passed last time, Xia Ren directly opened the elevator door on the eighteenth floor.

He looked at his token in surprise, and then stepped into the elevator.

Arriving at the familiar open field, it didn't take long for the space around him to distort, and he was teleported to the space where the doctor was.

The doctor opened his empty eyes, looked in his direction, and said, "It's strange that I thought you would be able to regain some strength, but you are even weaker than I thought. ”

"However, it is good that your presence is minimized, and it will also be beneficial for our next actions."

"What's next?"

Xia Ren wondered.

"As you asked two years ago, I will take you to ...... The Great Library of Serraino! ”

Xia Ren felt a violent palpitation, and the tentacles stretched out of the back of his head on their own, instantly enveloping him firmly.

As soon as he finished speaking, the quaint silver key on the doctor's chest suddenly burst into a blinding light, illuminating the room as if it were day.

Xia Ren took back control of the tentacles, separated a gap, and leaked out the vision in front of him, only to find that the outside was shrouded in a white light.

Then, in this white space, other colors gradually appeared.

It was an emaciated, somewhat hunched old man in a white gown.

The old man turned his head to face Xia Ren, who saw the identical silver key around his neck that was on the doctor's chest.

Looking up further, Xia Ren saw the position of the old man's eyes, wearing a pair of black sunglasses that were almost opaque.

"Is it ......?"

A bold conjecture came to him.

The old man ignored him, but took off the silver key around his neck and stretched out his hand to slowly swipe it in the air in front of him.

Something strange happened, the silver key was like a sharp blade, as if it had cut through space, and where it crossed, a pure black passage gradually appeared.

"Come here."

The old man beckoned to him, then stepped into the passage and disappeared.

Xia Ren hesitated, withdrew his tentacles, and also entered the passage.

No sooner had he left the white space than the entrance to the passage closed.

Xia Ren tensed for a moment, then looked ahead.

In the entire pitch-black space, only the silver key around the old man's neck exuded the only light.

"I'm a doctor."

The old man explained, "My full name is Laban. Cyleus Bailey. ”

When he said Ph.D., he couldn't have meant a degree.

As far as Xia Ren knows, there is only one "doctor" in the entire foundation.

"You're the same person as the one who soaked in the jar as a specimen?"

"That's to suppress my own strength, and, to keep me awake."

The Doctor took a step forward: "I am always shuttling between planes and planes, both past and future, where every space is real, which causes me to often end a plane journey without being able to tell if I have truly returned to the Origin World or started another journey.

It's extremely dangerous to get lost in the long river of the world, so I sealed away some of my power so that I couldn't make two consecutive space trips in a short period of time to make sure I could stay awake at all times. ”

Xia Ren pondered the message contained in his words and asked, "So you see the past and the future?" ”

"The past cannot be changed, but the future is always changing."

The Doctor seemed to recall some bad memories, saying, "I can only see parts of the future, such as certain facts that cannot be changed." ”

"What do you mean?"

"Doomsday."

The Doctor continued to take a step forward, and Natsuin had to keep up.

"The familiar world will collapse and humanity will eventually perish, and this is the countless futures I see, no matter how they change, the outcome will not change."

"Isn't that ......?"

Xia Ren couldn't imagine what kind of pressure and despair the doctor had been under.

"But I said that the future is always changing, maybe the end is not the only ending, give up, there is really no hope."

"Besides, I have seen the light." There was a hint of wistfulness in the doctor's tone.

"Light?"

"Yes, Light."

The doctor stopped.

"At that time, I was still young, far from mastering the power to spy into the future, so I could only travel through the past and collect those forbidden knowledge, but I stayed in that time and space for too long, which caused me to return to a problem, I fell into the gap of time and space, and fell into a world full of sunlight, where the sky was clear, birds flocked, the ground was full of life, the eyes were full of green, all kinds of lush plants grew among the collapsed buildings, and countless healthy people built new cities on the edge of the ruins, Live under the sky free of the old gods and the threat of pollution. ”

The Doctor sighed softly, "I lived there for a while, but then the real world had rejected me because of the time travel I had taken for too long, and I lost most of my memories, and I can only vaguely remember that I spent the most enjoyable time of my life there." ”

Xia Ren inexplicably remembered the barren world that connected humans and dreams.

Collapsed buildings, strange and bizarre plants, eternal clouds in the sky, and the occasional terrifying shadow in the clouds.

Perhaps, that is the vision of the end times.

"Are we going to that library?"

"Yes, the Great Library of Serrayno, you'd better remember the name."

The doctor continued to walk forward, and said: "The longer I stay in other dimensions, the more severe the rejection of reality will become, and the sequelae of long-term time travel is that my time in the real world has been lost little by little, from my original old age to my youth, and the appearance you see of me now is my real age. ”

"What if the degradation continues?"

"The reality of me will be completely erased, I will lose my spatial coordinates, and I will be lost in time and space forever."

"Will you die?"

"No, it won't."

"Then think about it from another angle, will it soon be eternal life? I feel like it's more like a gift. ”

"Gifts?"

The doctor chuckled under his breath.

"No, it's punishment. You won't understand. ”

"Okay." Xia Ren shrugged.

A doctor who can travel through time and space, this realm itself is difficult for Xia Ren to understand.

"By the way, forgot to answer your question."

"We're on our way to the library right now, and every step you and I take seems like a short time, but it's actually spanning several light years. ”

"Huh?"

Xia Ren was a little confused about what he meant by what he said suddenly.

"I forgot to tell you, the Great Library of Serraino, not in the Blue Star."