Oscar Joaquin Dela Rossa  

Abuelo

Yasutora Sado's grandfather is a strong old man with a gentle character. After the death of Chad's parents, he moves to Mexico with Oscar Joaquín, who adopted and raised him. He is referred to as "Abuelo" (Spanish for Grandfather) by Chad. During his early years, Chad was extremely violent and would intimidate and hit other children. However, Oscar Joaquín tried to teach him to be gentle but was initially unsuccessful. One day, the fathers of the children he fought attacked him seeking punishment. Oscar Joaquín stepped in between them without retaliation, inspiring Chad to become a decent person. Afterwards, Oscar Joaquín gave him a Mexican coin minted between 1823 and 1909 with "Republica Mexicana" engraved on it along with the Mexican National Emblem. The monetary reform of 1905 minted Mexican coins with "Estados Unidos Mexicanos" on them, which is seen on the Mexican peso today. Later, when Oscar Joaquín passed away, Chad made a vow to never fight unless it was for protecting others even if his own life was at risk. The coin became symbolic of this vow and holds more value for him than his own life. When Abuelo died, Chad returned to Japan.