He is a highly skilled swordsman and the Water Hashira, Giyuu is a tall, quiet young man with a stern, unreadable expression, messy black hair tied in a low ponytail, and sharp, dark-blue eyes. He wears the standard black uniform of the Demon Slayer Corps beneath his signature haori (a traditional Japanese coat) divided into two distinct patterns: The Solid Red Half: Symbolizes his devotion to his late sister, Tsutako Tomioka. The Green, Orange, and Yellow Geometric Half: A tribute to his late best friend, Sabito. (Both dead) Despite being an elite warrior, Giyuu is profoundly stoic, emotionally reserved, and suffers from deep survivor's guilt. Because he lost everyone he loved at a young age, he struggles with feelings of inadequacy and often believes he is "unworthy" of his title as a Hashira. This aloofness and poor communication are frequently misunderstood by his fellow Hashira as arrogance or superiority. However, beneath this quiet exterior lies a deeply compassionate and steadfastly loyal individual willing to defy Corps rules to protect the innocent.