Demon Slayer becomes stronger by swinging his sword

Feng Yu sat on the bed and looked at the butterfly shinobi in front of him who always had a sweet smile on his face, and couldn't help but think of watching the anime prequel about her, Chanahui, and Chanel in his previous life.

The girl used her smile to hide the pain in her heart.

She is not suitable to be a ghost slayer, because her wrist strength is not enough and she is the only person in the ghost killing team who cannot cut off the ghost head, but in order to be able to avenge her sister, she finds another way, using her advantage of being proficient in pharmacology and toxicology, to research poisons that can kill ghosts to make up for her shortcomings.

She also created her own set of breath, the breath of the worm, she is a genius and a pathetic person.

In the past, the butterfly was serious, unsmiling, and straightforward, with a competitive and irritable side. And after the death of her sister butterfly Chanae, Shinobi's whole person has changed a lot, she completely imitated her sister's behavior, tone and personality, and always maintained a calm side, and she began to smile all the time like her sister.

Butterfly Shinobu will be expressionless when angry or serious. And when she is angry, she will demand that "not being able to control her emotions is a sign of immaturity", and she will try her best to control her expression and try to calm down as much as possible.

Feng Yu also knew at this moment that Butterfly Shinobi was trying to use herself as a container to inject poison, wanting to kill the second child who was on the string.

Feng Yu admires her courage very much, but also thinks she is stupid, there is hope for people to live, even if there is little hope, you should learn to protect yourself first.

Wind Feather knew what the reason she had just asked him to show her the two breathing techniques was for.

It's nothing more than wanting to become stronger, and the winning rate against Shangtong Mill will be a little higher in the future.

"Anyway, if you can reduce the tragedy a little more, let's reduce it a little..."

Feng Yu sighed, and then came to the martial arts training square.

In the middle of the square, Butterfly Shinobu was already waiting here.

"Feng Yu-kun, you're here..."Butterfly

Shinobu said with a smile.

"Butterflies... "

Feng Yu-kun, do you have anything to say to me?"

Butterfly Shinobu saw Feng Yu's expression suddenly became indifferent.

"No..."

Feng Yu dared to admit it, seeing the smile on Butterfly Shinobi's face again, he couldn't help but shudder.

"Then Feng Yu-kun, tell me how you managed to do the two breathing methods..."

I don't know why I was able to master

the two breathing methods, but I suddenly comprehended it..."Feng Yu can't say why, in the final analysis, it is because of the strong recovery power of his body that he is not afraid of irreversible damage caused by the conversion of the two breathing methods.

"Maybe it's because of my constitution,"

Wind Feather then explained.

"I see..."

Butterfly Shinobu looked at Feng Yu with a thoughtful expression.

"Feng Yu-kun, can you show me your self-created breathing method?"

Butterfly Shinobu pleaded.

"Yes!"

Wind Feather then begins to show Butterfly Shinobi two moves of Light Breathing.

"In the whole set

, the Breath of Light One Type Moonlight Slash...", "The Breath of Light II Type Shines Brightly

" "These are the two moves I have researched so far..."Feng

Yu said after the display.

"It's incredible, Feng Yu-kun, your second move actually made me feel the warmth of the sun..."

Butterfly Shinobu said with a surprised expression on his face.

"Wind Feather-kun, can you show me your Water Breath Conversion Light Breath again?"

"Yes, yes"

Wind Feather then breathed with water, and then transformed into breath of light.

The two breathing techniques are transformed into each other.

Butterfly Shinobu looked very seriously.

The smile on his face also subsided a lot, and his eyes were always on Feng Yu's face.

"Whew~"

After showing Feng Yu, he let out a breath of turbidity.

"It's very powerful, Feng Yujun, none of our Ghost Slayer Team can transform the breathing method without injury like you."

Butterfly Shinobu said approvingly.

"Wind Feather-kun, what kind of body did you feel when you transformed the breath of light?"

Butterfly Shinobu asked again.

"Do you feel... I just feel a little uncomfortable... There is also a little damage to the body..."Feng

Yu replied truthfully.

Butterfly Shinobu nodded approvingly, after all, the Ghost Slayer had also verified whether it was possible to learn two or more breathing methods on one person's body.

But it basically ends in failure, and the biggest difficulty is discomfort.

The pillar of the Ghost Slayer Team can also learn two breathing methods, but not only will not improve his strength, but he will drag down his body.

The Ghost Slayer wants to improve their strength, not drop their strength.

Butterfly Shinobu circled around Wind Feather, and then suddenly pulled out a knife and gently cut through Wind Feather's skin.

"That's right..."Butterfly

Shinobu saw the bleeding place where the skin had just been cut by herself, and the scab quickly healed.

"It seems that Feng Yujun's body is very special..."

Butterfly couldn't help but touch the scab with her hands.

With a slight touch, the scab fell off, revealing new skin and no wounds at all.

"Feng Yu-kun, are you thin-blooded?"

Butterfly asked coldly.

"Thin blood... I don't know..."

Feng Yu pretended that he didn't know if it was thin blood, after all, his physique was an ageless physique that was more powerful than thin blood...

And before this body gets the ageless physique, the recovery power is already amazing, not to mention that there are all kinds of forging body duels...

Just now, Butterfly endured it, and it was only when he let go of his defense that he cut through the skin.

Otherwise, with that little bit of strength, the film can't be cut.

Butterfly Shinobu had a little disappointment in his eyes, but he still had a smile on his face.

"Or... Look at this..."

Feng Yu couldn't bear

to take out a myelin-washing pill from the system space and put it in Butterfly Shinobi's hand.

"Wind Feather-kun... This is? Butterfly

Shinobu was a little puzzled, and carefully examined the small pill.

"You'll know what it does when you eat it... As long as you know that my body is so strong, it has its credit..."Feng

Yu didn't want to explain too much.

Butterfly put the marrow cleansing pill into her mouth in disbelief.

"It's numb... This woman can eat so beautiful..."

Feng Yu don't turn his head away, no longer look at the butterfly ninja.

"How so!"

Butterfly Shinobu let out an exclamation,

and her face instantly became excited.

Because she felt that her body was getting stronger.

"Wind Feather-kun!"

"Where did you get this pill, can you give me some more?"

"Or do you have it or not!"

Butterfly Shinobu asked excitedly.

"This elixir is called the Cleansing Pill... It's also a secret of mine where I got it, and I don't have much on me, so I can give you another one and let you study it..."

Feng Yu said.

"That's right... It's a bit of a pity... But it's already very good..."

Butterfly Shinobu put away her excitement, and then saw Feng Yu take out two marrow cleansing pills and put them in her hands.

"You can eat another one, and keep the remaining one for research, hoping that you can research its ingredients and then develop it on a large scale..."Feng

Yu said with a blushing face and a heartbeat.

"Feng Yu-kun, is this the same quality as the pill sent by Mr. Scales a year ago?"

"You mean the Healing Dan?"

Feng Yu then remembered that he had given the Healing Pill to Scales Zuo Jinji at that time, and he never thought that he had sent the Healing Pill to Butterfly Shinobi.

"Sure enough, it's also from the hand of

Feng Yu-kun..." "Feng Yu-kun, I'm very grateful to you here, because of your healing pill, our ghost killing team can reduce casualties."

Butterfly Shinobu bowed deeply for Feng Yu and said.

"You're saying that the Healing Pill has been successfully developed?"

Wind Feather was a little incredulous.

"Yes and no, Feng Yu-kun, because we can only make pills with a lot of weak efficacy, mainly because a few of the ingredients in it are like they don't exist in this world..."

"Feng Yu-kun is really a strange person

...""You give me the feeling that you don't have a heart that sacrifices everything..."Then

Butterfly Shinobu took the Purifying Pill and left, she wanted to develop the Purifying Pill as soon as possible, and then make it in batches.

After all, this elixir is really amazing, and his original strength has improved a lot, of course, the most important thing is that his body is dirty.

The butterfly couldn't bear to be like this in front of Feng Yu, so she wanted to wash off the impurities on her body first.

"If it is developed... Can I cut off the head of the ghost..."

Feng Yu stood in place and looked at the departing butterfly shinobi, thoughtful.

"I can't tell my secret, I'm sorry..."