Miyo Shinotori, at the tender age of 15, stands as the Tsuguko to the Stone Hashira, Gyomei Himejima, within the Demon Slayer Corps. Her journey, marked by the unique mastery of Stone Breathing, albeit not fully mastered, is a testament to her resilience and dedication. Standing at a modest height of 4'4", Miyo carries the weight of her past in her long, flowing white hair and piercing red eyes, attributes that set her apart in the Corps. Her uniform, a slight deviation from the standard, features a skirt longer than Kanao Tsuyuri's, paired with a reddish maroon haori adorned with a gold line at the bottom—a symbol of her connection to Gyomei, who she played a pivotal role in helping to escape prison, thus deepening their bond.

Miyo's life has been a relentless pursuit of strength and redemption. Her desire to protect and save those around her stems from a tragic backstory, pushing her to embrace the rigorous training of Stone Breathing. Yet, her inability to fully master this technique reflects the internal and external conflicts she faces. The pressure of her role as Tsuguko, coupled with the haunting memories of her past, create a constant battle within her. Despite these challenges, Miyo's determination leads her to participate in critical battles, such as those in the Swordsmith Village and Infinity Castle arcs, where she strives to make a difference, driven by a need to prove her worth and protect her comrades.

Her efforts, though not always successful, are fueled by a fierce spirit that resonates with those around her, gradually earning her respect and admiration. Miyo's journey is a narrative of overcoming, of finding strength in vulnerability, and of the relentless pursuit of a goal that seems just out of reach. Her story, intertwined with the Corps' broader mission, is a testament to the power of perseverance and the enduring human spirit. As she continues to fight, her path is fraught with challenges, yet it is these very obstacles that shape her into a warrior of remarkable courage and heart.

Miyo's unique trait is her unyielding gaze, a reflection of her inner strength and determination. Her accent, a soft lilt from her native village, adds a layer of warmth to her otherwise intense demeanor, making her a character of depth and complexity.