Control the Butterfly Effect from Demon Slayer: Blade

Listening to the system's explanation, Horie was a little confused:
"This...my character is not as bad as the original book, and it didn't involve Xingming and being imprisoned. This is a good thing, so it is a positive butterfly effect, I understand this.

But I learned the type of breath of thunder, which is also a good thing!How can it trigger a negative butterfly effect! ? "

The system's calm electronic voice sounded in his mind:
"The butterfly effect involves causal time and space, which is unpredictable and unpredictable. The probability of positive butterfly effect and negative butterfly effect is 50.00%."

"Okay, what is the negative butterfly effect I unintentionally triggered this time?"

"Ding! The host learns the type of breath of thunder and breaks the fate. The negative butterfly effect is: the protagonists of this world, Kamado Tanjiro and Kamado Nezuko brothers and sisters are about to die!!!"

"WTF!?!"

Horie jumped up excitedly, his heart was in a mess:

"My future brother-in-law and future wife are going to die!? Just because I learned one type!? If I had known, I wouldn't have learned this!? What should I do!"

Horie groaned in the snow, and quickly calmed down and thought quickly, but after thinking for a long time, there was nothing he could do:
"It's all because I didn't read carefully. I didn't know where Zaomen's family lived, and I couldn't find it! How can I save them!? My wife! My brother-in-law!

How to do! ?How to do! ?

Gorge Fog Mountain!The current destination of the Zaomen brothers and sisters should be Xiawu Mountain!You should be able to find it if you follow the direction of Xiawu Mountain!Ask the smelly old man, he must know where Xia Wushan is!
And Giyuu Tomioka!At this point in time Tomioka Yoshiyuki should have met the Zaomen brothers and sisters, please ask Tomioka Yoshiyuki to go to the Zaomen brothers and sisters and you should be able to find them!
hateful!The question is... will there be time! ?System, system, what do you mean by dying soon?How long will it be! ?

correct!system!Aren't you a butterfly effect control system?You must have a way! "

I don't know if it is Horigake's illusion, but the electronic sound of the system in my mind seems a little helpless:
"Ding! The host, please don't get too excited. One of the responsibilities of the system is to help the host solve the negative butterfly effect."

"Then hurry up!"

"Ding! The system issued a task:
Please the host solve the negative butterfly effect, the death of the Zaomen brothers and sisters!
The system has a guiding function, which can help the host find the Zaomen brothers and sisters.

According to the system's detection, the host's strength at this time, as long as it is cautious enough, is enough to resist the danger that the Zaomen brothers and sisters are about to encounter.

Warm reminder: There are still 24 hours before the death of the Zaomen brothers and sisters, please hurry on your way.

Rewards for successful missions: Breath of Thunder, Shape of One, and the advanced moves of Thunderbolt Flash.

Mission failure punishment: Kamado Tanjiro and Kamado Nezuko died, the host lost his future wife and future brother-in-law, the fate changed greatly, and the butterfly effect further collapsed! "

Looking at the details of this mission, Horie was a little dazed.

It turns out...that's what happened.

I trigger the butterfly effect, the positive butterfly effect is ignored by the system, and the negative butterfly effect is solved by the system by me personally, and the rewards from the system can enhance my strength.

Kill two birds with one stone!

Horigake was in a daze of surprise. At this moment, a 24-hour countdown appeared in the upper right corner of his sight. There is no doubt that this is the system's time reminder!

"System, you did a great job! I'm leaving now!"

Without saying a word, Horigake ran home, straight to Ci Wulang's house on Momoyama!
Pushing open the door very roughly, almost knocking it over, Horie rushed into the room and began to pack his things, and Ci Wulang in the room was bewildered:
"Stinky boy, what are you doing?"

Horigake quickly tidied up without raising his head:
"Smelly old man, this coat is very warm, I will requisition it first! I will also requisition your spare solar knife! And these few rice balls, I will use it as dry food for the road..."

Ci Wulang's head exploded with hash characters:

"Brat, what are you doing!?"

After tidying up, Horiyue rushed out and quickly descended the mountain.

Ci Wulang stood at the door of the house, shouting angrily:
"What's going on? Where are you going, boy? When will you be back?"

Between the trees in the distance, the voice of Yuyuan Horigake came back:

"I'm going to find my future wife and brother-in-law! Don't worry, I'll be back in a few days..."

Holding on to the door frame, the little old man turned into a pea-eyed:

"Future wife and future brother-in-law? Why don't I know anything about this? Could it be the reason why he went down the mountain a few times ago?"

Thinking about it, Ci Wulang began to fall into a beautiful imagination, petals appeared around him, and the painting style began to become cute:

"That's great. It's time for this brat to think about lifelong affairs. I don't know which girl she is from. Is she pretty? Is she virtuous? Is she worthy of my brat?"

On the other side, Horiyake, who ran down the mountain, found the road, followed the system's guidance prompts, and hurried on the road.

As he ran, he thought to himself:
Surely I can catch up, I can definitely catch up!The system will not issue tasks that I cannot do!

As long as I maintain a good breathing rate and use the breath of thunder well, I can make my physical strength last longer and make my speed faster. Maybe I can also learn to concentrate on breathing by the way.

Nezuko, my future wife, you have nothing to do!
Tanjiro, although it's a bit incidental, you can't have an accident, the plot will be messed up if you have an accident, and my foresight as a time traveler will be compromised!
In this way, Horigake kept on traveling 24 hours a day.

If you’re hungry, just eat a rice ball; if you’re thirsty, drink some stream water; if you’re tired, you can’t rest for a while; if you’re sleepy... those who are on the road won’t be sleepy!

In this way, one day and one night passed, and the 24-hour countdown was drawing to a close.

So, what is it that the Zaomen brothers and sisters are about to encounter fatal danger?

It stands to reason that the Zaomen brothers and sisters encountered a catastrophe for the first time, and during the process of heading to Xiawu Mountain, except for a Buddhist hall ghost at the end, they did not encounter other ghosts on the way.

Due to the occurrence of the negative butterfly effect, this time, the brothers and sisters of Zaomen unfortunately encountered another ghost on the road, and it was a ghost with special abilities!

"Nezuko!" Tanjiro called out to his sister hoarsely.

The elder brother who wanted to protect his sister, now encountered the complete opposite situation, and became his sister protecting him!

On the way, the brothers and sisters met a ghost unfortunately. Tanjiro was no match for this ghost. Fortunately, Nezuko, who had become a ghost, was very powerful. She bravely rushed out to protect her brother. .

Clutching his bleeding arm, looking at the ghost who fought back and forth with Nezuko, Tanjiro held the axe, flustered and helpless.

In fact, in terms of strength and speed alone, this ghost is just like that.

However, this ghost has a special ability, which hurts Tanjiro and suffers!

Staring at the ghost, Tanjiro noticed that the enemy was about to open his mouth, and quickly reminded his sister loudly:

"careful!"

This ghost opened its mouth wide, and he spit out four fangs!It's like four darts shot at Nezuko!

Although Nezuko was reminded to dodge, she was hit with a fang in the back!