"[To his great-grandfather] When I was unable to bear the burden of living in shadow...When I abandoned my own family and fled, not caring for the shame I brought upon myself...It was Genryūsai-dono who took me in. That man, to whom I owe the greatest debt, has had his own life cut short at the hands of these Quincy. I have a duty...to avenge this humiliation!!"
January 1, 1970
https://en.wikiquote.org/wiki/Bleach_(manga)