Noboru "Gramps" Uruma

About

Noboru Uruma is the overarching protagonist of Juujika no Rokunin. He is the grandfather of Shun Uruma and Kakeru Uruma, as well as the father of Mr. Uruma and the father-in-law of Mrs. Uruma. Originally a war veteran, he eventually retired in exclusion and ostracism from his son and daughter-in-law (with the exception of his grandsons who showered him with a lot of love). However, he is forced to spring into action once again upon learning that his eldest grandson's bullies have murdered his son and daughter-in-law, as well as knocking Kakeru into a coma for four years.

(Source: Heroes Wiki)