In the world of collapse, I am surrounded by Valkyries

The tail end of the spine sword instantly tore a black crack in the air.

The opening is neither too big nor too small.

It can only accommodate one hand.

at the same time......

The true energy in Cao Bin's body quickly disappeared.

Almost one wisp is consumed per second.

Moreover, he was directly swallowed by the Spine Sword, and his true energy was disconnected from Cao Bin.

This kind of belonging is completely consumed.

Not a bit of it can be recycled.

Cao Bin quickly reached his hand into the black crack and withdrew it when he touched something.

Take advantage of the situation to shut down the ability of the spine sword.

Try to conserve as much of your true energy as possible.

Judas stared at Cao Bin from beginning to end. She watched the man pull out two objects from the unknown black crack.

One piece is a blue spiral glass test tube.

The other is a letter.

Chapter 189 A letter to myself

It's eight o'clock in the evening.

Cao Bin, sitting on the bed, stared at the two objects in his right hand in a daze.

This blue spiral glass test tube gives people a strong sense of déjà vu.

"T-Virus?"

Cao Bin didn't know how to complain for a moment.

Like Judas peeking over the side.

Put down the spine sword in your hand.

Cao Bin handed the blue spiral glass test tube to the white-haired, blue-eyed vampire and said, "Hold it for me."

"Oh......"

He nodded obediently and took the blue glass test tube like Judas.

Cao Bin opened the letter in his hand and began to read.

【This is a letter I left for myself. 】

【To prevent the letter from being tampered with. 】

[I specifically gave the Spine Sword to Kosmo.]

Seeing this, Cao Bin was stunned, and his eyes became a little dazed.

The shadow of memory loss slowly looms over my heart.

"My own letter."

"And it was specially given to Kosmo."

"What's going on..."

Calming his mind, Cao Bin continued to look down.

The black font gradually came into view.

【Due to limited time. 】

[I can only make it short - first of all, there are three pollution sources in the current Saint Freya Academy. ]

[One of them, I’m pretty sure, is Theresa.]

[Another one is imprisoned in a red-painted drum. She is the Ruler of Erosion from the previous civilization.]

【As for who is the last one...】

【You need to find the answer by yourself. 】

There are three pollution sources in total, and two of them have been identified.

This is certainly good news for Cao Bin.

but......

"Can we really believe the information written here?"

Cao Bin is not sure.

Anyway, the Ruler of Corrosion trapped in the red-lacquered drum cannot be trusted.

Feiyuwan has been released by Walter Yang.

Here a new doubt arises.

When I write my own letter.

Has Walter Yang not left St. Freya Academy yet?

"Putting this matter aside, Theresa is the source of pollution and needs attention. At that time, she was not possessed by the Higyokumaru yet."

“But I said she was the source of pollution.”

"Does this mean that the Herrscher of Corrosion may not be on the principal's person..."

Cao Bin's brain was working rapidly.

The imitation of Judas next to him looked down intently.

This little guy with white hair and blue eyes reads very fast.

Almost without thinking, I just kept browsing.

【I would like to briefly explain this here. 】

[To clear Saint Freya Academy, you must eliminate all sources of pollution and capture all surviving yandere Valkyries to restore them to normal. ]

[Both must be completed in one cycle, otherwise you will not be able to clear the level. ]

These two things coincide with Cao Bin’s ideas.

That's the return to normalcy.

It makes people very curious.

"My strategy has not once restored the Valkyrie to normal, which means... my strategy is not thorough enough?"

Cao Bin took a deep breath.

What should be done to restore the Valkyrie to normal?

This matter was of great importance to Cao Bin, and he only hoped that it could be recorded.

【There are three ways to solve the pollution source. 】

[First, kill the host; second, use special items to seal it; third, capture her. ]

[I only learned about the third point not long ago.]

[He almost conquered Ling. 】

[Unfortunately, the host that the pollution source parasitizes is very difficult to attack... much more difficult than a normal Valkyrie. ]

Cao Bin's eyes were fixed on the third point.

I looked at the guide again.

I always feel like something is not quite right.

"Pollution sources can also be conquered...and their conquests are very difficult."

"No wonder Theresa is not well..."

"Wait... Think about it this way, Muliangta Himeko is also very difficult to capture, could she also be the source of pollution?"

Cao Bin fell into deep thought.

soon......

Cao Bin continued to look downward.

【And want to restore the Valkyrie to normal. 】

[The self-destructing system must be retrieved. ]

[You can ask Ai Yi for help, but don't trust her too much. I found that this artificial AI seems to have its own little thoughts, so I left this letter to prevent any accidents. ]

[Of course... Ai Yi will never harm you, we can all rest assured about that. ]

Cao Bin turned his head and looked at the imitation of Judas, and said: "Seeing this... do you have anything to say?"

"I...we won't hurt you!"

Imitating Judas's solemn answer.

Cao Bin sighed softly.

to be frank.

Sometimes this kind of self-righteous help can really be harmful.

But Cao Bin had no other solution.

"I mean... system, do you understand? My system exploded, so you knew about it..."

"Why didn't you tell me?"

"If I hadn't been smart and left a letter for myself, I probably wouldn't have known until now that you guys knew I had a system."

Cao Bin was in a bad mood.

The little one in the black and red dress scratched her head.

"System? You mean this... I don't know... You can only ask Ai Yi. After all, I'm just an armed puppet."

Seeing this......

Cao Bin did not make things difficult for Judas.

【Perhaps you are curious about why you lost your memory. 】

【I can tell you responsibly. 】

【This is the law of knowledge.】

[As for the reasons and the process, I won’t go into detail here. You can ask Ai Yi, but she should have told you. Well... I hope so. If she didn’t tell you on her own initiative...]

【That would be a lot of fun. 】

"Did I lose my memory? And Ai...what on earth do you want to do..."

It seems like I can feel the emotions in the text.

Cao Bin's heart couldn't help but feel heavy.

【well......】

[I wanted to write more, but unfortunately time is too tight and I still have a lot of things to do. ]

【One last thing. 】

【That's about the blue potion. 】

[Does it look like the T virus? ]

Cao Bin nodded subconsciously.