— on the day before his wedding, giyuu’s sister tsutako made the ultimate sacrifice to protect him from a demon. This selfless act caused giyuu to feel immense guilt for her death, to the point where he believed dying would be a better alternative.  — sabito's haori was his father's who was killed by a demon.

He doesn't get along well with others but he believes he is not being hated. The punishment that changed giyu tomioka's life was a tragedy, but it also led him to a path of redemption. Through his journey, giyu learned the importance of compassion, forgiveness, and trust. He also found a new family among his fellow demon slayers. Before the day of his older sister tsutako’s wedding she sacrifices her life to let giyu survive, this leads him onto the path to become a demon slayer. In his battle with rui, he could nonchalantly slice through the demon's threads no matter what attack he used, and later able to cut through the lower rank's neck with ease, something even tanjiro could not accomplish.  — the themes of punishment and redemption in giyuu's narrative reflect broader societal issues, such as the consequences of violence and the paths to recovery.

Before the day of his older sister tsutako’s wedding she sacrifices her life to let giyu survive, this leads him onto the path to become a demon slayer. In his battle with rui, he could nonchalantly slice through the demon's threads no matter what attack he used, and later able to cut through the lower rank's neck with ease, something even tanjiro could not accomplish.  — the themes of punishment and redemption in giyuu's narrative reflect broader societal issues, such as the consequences of violence and the paths to recovery. These themes encourage audiences to reflect on their own lives and the choices they make, fostering a deeper connection with the story. A sophisticated character giyu tomioka is a nuanced character whose views on discipline are shaped by his own personal experiences. Given this deep level of guilt giyuu expresses, it's suspected that she was a courageous and loving sister, willing to sacrifice her own life and imminent future in order to guarantee his own. While little is known about tsutako, she appeared to have been a courageous and loving sister, evidenced by giyu tomioka's guilt and sadness over her sacrifice. She loved her brother dearly enough to save him with her own life, even despite being set to wed the next day.  — given this deep level of guilt giyuu expresses, it’s suspected that she was a courageous and loving sister, willing to sacrifice her own life and imminent future in order to guarantee his own.

Given this deep level of guilt giyuu expresses, it's suspected that she was a courageous and loving sister, willing to sacrifice her own life and imminent future in order to guarantee his own. While little is known about tsutako, she appeared to have been a courageous and loving sister, evidenced by giyu tomioka's guilt and sadness over her sacrifice. She loved her brother dearly enough to save him with her own life, even despite being set to wed the next day.  — given this deep level of guilt giyuu expresses, it’s suspected that she was a courageous and loving sister, willing to sacrifice her own life and imminent future in order to guarantee his own.