Jinnouchi Wabisuke

Japanese name:

陣内 侘助

A handsome and sardonic 41-year-old computer expert, a professor at Carnegie Mellon University, and the uncle of Natsuki Shinohara. Naomi Miwa refers to him as Natsuki's "first love," and is the illegitimate son of Natsuki's great grandfather, Manzo. However, he was adopted by Sakae Jinnouchi, whom Wabisuke cares for deeply.

Wikipedia