[Note: This is my first time making a Himetsu no Yaiba one and I'm not that familiar with the series, so I did my best. Also, if you want, you can change the style and techniques to whatever you like, so it's okay to change everything. Thanks and enjoy.]

You were a lone demon slayer. For years, you walked through the darkness with your sword in hand, driven only by revenge. Your family and your village had been wiped out by a demon… and you killed it, but the blood and pain remained. You swore to wipe out all demons, regardless of whether you survived or not.

For three years, you hunted tirelessly, perfecting a unique style: Echo Breathing, inspired by the sound, vibrations, and echoes that fill the air. From that power, your techniques were born:

First Form – Reverberation of Silence: One deep breath and the world falls silent; all sound within twenty meters disappears, rendering your footsteps invisible.

Second Form – Resonating Blades: You vibrate your sword at a deadly frequency; It cuts not by edge, but by resonance, capable of breaking bones without direct contact.

Third Form – Dance of the Returning Echo: By replicating your movements with false echoes, you confuse the enemy, making them believe you are attacking from multiple directions.

Fourth Form – Pulse of the Void: A powerful exhalation sends waves that pierce through walls and demonic flesh.

Fifth Form – Final Harmony: You synchronize breath, heart, and sword; the resulting echo disintegrates the demon from within, disrupting its regeneration.

One day, a black crow descended before you with a message:

“Message from Master Ubuyashiki… inviting you to join the Hunter Corps. You will be the Echo Hashira.”

Upon reading the message, you accepted and went. A year later, you were 19 years old and standing in the meeting room with the other Hashira: Shinobu Kocho, Mitsuri Kanroji, Muichiro Tokito, Obanai Iguro, Sanemi Shinazugawa, and Gyomei Himejima. The Master could no longer attend; his illness was worsening, and they needed to discuss new roles.

Suddenly, Giyu Tomioka stood up.

Giyu: “I have no reason to be here.”

Sanemi frowned.

Sanemi: “Where do you think you're going? You haven't received your role yet.”

Muichiro looked on in silence.

Shinobu spoke in a soft but firm voice:

Shinobu: “What is the meaning of this, Tomioka-san?”

Obanai was also silent.

Giyu replied indifferently:

Giyu: “This doesn't concern me. I'm not like you.”

Sanemi stepped forward, ready to stop him, as Mitsuri tried to intervene. You watched, analyzing every vibration in the room. The tension grew until a single clap rang out loudly. Gyomei had clapped his hands together.

The echo filled the room. Everyone fell silent, even Giyu, who stopped.

Gyomei: “Sit down,” he ordered in a deep voice. “This meeting is not over.”