Demon Slayer: Strength Gained with Every Swing of the Sword

After Feng Yu left the Soul Cleansing Pills behind, he quickly slipped away. After all, Shinobu Kochou was on the verge of an outburst.

Shinobu Kanae was a taboo for Shinobu Kochou; even the slightest touch could set her off.

"That was close..."

Feng Yu muttered, still feeling uneasy.

He had been constantly using his spiritual energy to monitor Shinobu Kochou's every move. The dark pallor on her face was no joke.

"I hope she becomes stronger. And I hope she listens to me."

Shinobu Kochou carried too much weight on her shoulders. She wanted revenge but lacked the strength for it. All she could do was feed herself poison, hoping that one day she could face that demon, Upper Moon Two, Doma—the one who devours women.

"Maybe it's best to avoid her for the next few days…"

Holding Xiao Bai in his arms, Feng Yu quickly made his way out of the Butterfly Mansion, heading towards the nearest town.

"Once Shinobu Kochou finishes digesting the Soul Cleansing Pill, her strength will likely increase significantly. After that, I'll approach her again..."

Meanwhile, Shinobu Kochou swallowed the Soul Cleansing Pill without expression, feeling the surge of power coursing through her body. Although this was the result she had been hoping for, there was no joy in her.

Before long, five days had passed.

"This is the feeling of having power..."

"Perhaps I should get a new sword..."

Shinobu Kochou raised the sword in her hand and muttered, the Sword humming with a soft sound.

"Hey, Shinobu Kochou-san, long time no see. I've missed you."

Feng Yu jumped down from the rooftop and greeted her with a smile.

"Heh, yes, Feng Yu-kun, it's been several days since I've seen you. I've been looking for you..."

A chilling smile appeared on Shinobu Kochou's face as she spoke.

"This woman still hasn't calmed down... Looks like she needs a beating to vent her anger."

Feng Yu guessed from her expression that Shinobu Kochou wasn't finished being upset.

"Miss Shinobu, I'm just speaking the truth. You're hurting your own body like this. You wouldn't want your sister to see you in this state, would you?"

Feng Yu said.

"Sister..."

Shinobu Kochou seemed lost in thought, recalling the time when she and Kanae had lived together.

Back then, she was lively, expressing her emotions freely. But since her sister's death, she became withdrawn, always wearing a smile on her face.

She still faintly remembered this image of her sister…

It could be said that Shinobu Kochou was imitating her sister's way of life.

"Feng Yu-kun, I'm curious, how do you know all this?"

Shinobu Kochou's grip on the sword tightened, ready to strike at any moment.

"Mm... How about we have a match? If you win, I'll tell you."

Feng Yu suggested.

"That works for me... Feng Yu-kun, don't beg for mercy later. After all, swords have no eyes, and I might just sever your hands or legs. But don't worry, I can heal you completely afterwards."

Shinobu Kochou smiled sweetly, her voice deceptively gentle.

"This woman... she says the most tender words but does the most ruthless things!"

Feng Yu cursed inwardly.

"Let's see who wins and who loses."

Feng Yu drew a knife from his side.

"Feng Yu-kun, you think so little of me?"

Shinobu Kochou's face showed the veins in her neck, yet she still smiled.

"Alright then~"

Feng Yu knew that if he didn't use his demon-slaying sword, Shinobu Kochou would explode in fury, and there might be an irreparable rift between them after this.

"Feng Yu-kun, your sword seems different somehow..."

Shinobu Kochou noticed that his sword wasn't entirely green, and asked curiously.

"Well, it doesn't matter. Don't go easy on me just because I'm a girl. That could be very dangerous!"

With that, Shinobu Kochou leapt into the air. Her haori billowed like butterfly wings, and she swiftly lunged at Feng Yu.

"Total Concentration, Insect Breathing: Butterfly Dance Trick!"

Shinobu Kochou's Sword had a four-leaf-shaped guard, the hilt primarily mint green, the sheath white, and the Sword long and thin with a hooked tip at the end.

Her speed was incredible—so fast that an ordinary person wouldn't even see her movements, but in Feng Yu's eyes, everything slowed down.

"Looks like she's really angry..."

Feng Yu watched as the tip of the Sword approached him, and he lightly lifted his demon-slaying sword.

"Cling!"

The Swords clashed, and the force of the strike sent Feng Yu back half a step.

Feng Yu didn't dare to underestimate her attack, because he could feel that Shinobu Kochou's strikes were causing successive damage. Each strike was stronger than the last.

In his past life, Feng Yu knew that although Shinobu Kochou's slashing strength wasn't strong, her downward pressure and thrusting power were formidable enough to pierce through rock. Her thrusts were faster than the Water Breathing's Water Surface Slash.

Now, he was feeling that power firsthand.

Her sword was unique to her, and with the enhanced power from the Soul Cleansing Pill, her attacks were faster and fiercer.

"Cling!"

"Cling!"

No matter how Shinobu Kochou changed the direction of her attacks, Feng Yu was able to block them.

Suddenly, Shinobu Kochou flipped backward, her foot aimed at Feng Yu's vitals.

"Damn, that's ruthless!"

Feng Yu saw a small knife hidden in the tip of her foot and quickly raised his demon-slaying sword to defend.

"Feng Yu-kun, are you going to keep defending?"

Seeing that her sneak attack failed, Shinobu Kochou used the momentum to pull away from him, laughing.

Feng Yu knew that Shinobu Kochou was even angrier now.

He said nothing, just watching her intently. Slowly, he spoke: "Be careful!"

"Boom!"

Feng Yu charged at her like a beast, his powerful stride sending dust flying behind him.

Shinobu Kochou didn't expect Feng Yu to really come at her. She instinctively raised her sword to block, but Feng Yu's strike was overwhelming.

"Boom!"

Shinobu Kochou's body was sent flying, crashing to the ground.

She slowly rose, wiping the blood from the corner of her mouth.

"Feng Yu-kun, I didn't expect your strength to be this great..."

Shinobu Kochou gritted her teeth and said through the pain.

"Don't underestimate me!"

Her face twisted in a grimace as she shouted.

Then, she charged at Feng Yu again, her attack more frantic, as if she were throwing her life into the fight.

"I'm not underestimating you! I'm not! I will avenge my sister! I will!"

Feng Yu easily blocked Shinobu Kochou's attacks, letting her swing her sword wildly without any strategy.

He knew Shinobu Kochou needed to vent her emotions. Once she exhausted her strength, her anger would dissipate.

Feng Yu was simply waiting for that moment.

"You think so little of me... You think so little of me! Why do you think you can look down on me!"

Shinobu Kochou shouted, tears streaming down her face as she continued to strike.

The powerful blows caused the training grounds to reverberate with loud sounds.

Soon, everyone in the Butterfly Mansion was drawn by the noise.

"Miss Shinobu... she..."

The three young girls, Teru, Sei, and Aoi, covered their mouths, unable to believe the fierce woman before them was the kindest and least angry person they knew.

"Sister..."

Kanao quietly watched everything unfold before her, feeling the anger rising from Shinobu Kochou's heart. Her gaze became focused, and a surge of fury began to build.

She gripped her sword tightly.

The people of the Butterfly Mansion said nothing, quietly watching Shinobu Kochou unleash her emotions.

At that moment, they all realized that the usually calm and gentle woman could also display such a fierce side.

Soon, the sun began to set.

Shinobu Kochou's movements slowed, and eventually, she collapsed into Feng Yu's arms.

Feng Yu remained silent, gently wiping the dirt from her face.

The people behind them dared not move, afraid to disturb the intimate moment between Shinobu Kochou and Feng Yu.

"It's alright. Come, help her back to her room so she can rest. She's too exhausted..."

Feng Yu spoke softly.

As Shinobu Kochou was carried back to her room by the others, Feng Yu received a system prompt that the challenge had been completed, but somehow, he couldn't feel happy about it...