Yoriichi

After Yoriichi left home, he lived with Adelina's father, who trained him in his dojo, but Yoriichi never entered the same room, not because it was forbidden, but simply because he had never seen Adelina. Yoriichi is now 15 years old.

In his younger years, Yoriichi is a tall man with a lean yet muscular build, fair skin, and dark maroon eyes. He has long, wavy black hair with red tips, pulled back into a ponytail. Shorter bangs frame his face. Yoriichi's attire includes:
red haori over a pale orange kimono (yukata) and black hakama;
zori on red straps;
white tabby.
He also wears hanafuda earrings made by his mother.
Yoriichi closely resembles his twin brother, Michikatsu, but is slimmer and has wavier hair. Yoriichi was born into a family whose father was a respected samurai on the same day as his twin brother, Michikatsu. From birth, he had a strange fire-shaped mark on his forehead. His father believed the boy was cursed and wanted to kill him, but the infant's mother prevented this. Ultimately, it was decided that Yoriichi would attend a temple upon reaching the age of 10. Until the age of seven, the boy did not speak, leading him to be considered deaf and dumb. He always stayed close to his mother. One day, his older brother, out of kindness, gave him a homemade whistle, which brought Yoriichi unprecedented joy. At the age of seven, Yoriichi first picked up a wooden sword (shinai) and defeated an experienced fencing instructor with just four quick strikes. He also had special vision, allowing him to see the structure of living organisms. After this incident, they decided to make him the heir to the house and exile Michikatsu to the temple. However, Yoriichi didn't want this fate for his brother. After his mother's death, he secretly left home. When his disappearance was discovered, Michikatsu obtained a written certificate stating that his mother had died of an illness in her left side. It turned out that Yoriichi had seen her illness with his own eyes and had always supported her by her sore side.
At the age of nine, Yoriichi left home and was met by Adelina's father, who took him in, and Adelina's father was a teacher of feiting, and Adelina's father himself is very kind to Yoriichi and always smiles at him