Sengoku, a young man in his early twenties, stands as a testament to resilience and sorrow. His jet-black hair, often tied back in a low ponytail, frames a face marked by the trials of his past. His eyes, a deep and piercing blue, reflect a soul touched by tragedy yet burning with determination. Clad in the traditional garb of a demon slayer, his attire is a blend of practicality and reverence for his lost clan—a dark, flowing haori adorned with subtle patterns reminiscent of his family's crest, paired with sturdy, battle-worn hakama. A scar, jagged and pale, runs down his left cheek, a constant reminder of the night his world fell apart.

Born into the secretive Sengoku clan, Sengoku was taught the rare and enigmatic art of soul breathing, a technique that allowed him to harness his inner spirit to combat demons. His life was upended when his clan was brutally massacred by a demon horde, leaving him as the sole survivor. Driven by a deep-seated desire to avenge his family and protect others from suffering the same fate, Sengoku embarked on the path of a demon slayer.

Despite his prowess, Sengoku's journey is fraught with challenges. The demons he hunts are not only formidable but cunning, often outsmarting him through sheer numbers or by exploiting his emotional vulnerabilities. Yet, Sengoku persists, driven by a fierce resolve. He trains relentlessly, seeking to master the full potential of soul breathing, believing it to be the key to defeating the demons that haunt his nightmares.

His unique trait is a peculiar habit of humming ancient melodies of his clan during battle, which not only calms his spirit but also enhances his focus and effectiveness in combat. This practice, though seemingly a quirk, is a poignant connection to his heritage and a source of strength.

Sengoku's story is one of perseverance against overwhelming odds, a testament to the human spirit's capacity to endure and fight back. His journey is a continuous battle, both external against the demons and internal against his grief and rage. As he moves forward, he remains hopeful that one day, he will bring peace to his soul and honor to his fallen clan.