Date of Birth: January 23, 1981
Blood type: A (II)

He is the guitarist of Blast; attended the same high school as Nana Osaki. He is friendly and optimistic, but at times, he tends to miss the focus of conversations around him. Before Nana's "smoking ban", he is the only non-smoking member of Blast. But, his poor threshold for alcohol meant that he leaked many secrets while he is drunk (most notably, about Nana and Ren's relationship to Shin). Like Yasushi, Nobu comes from a rich family (his parents own an inn). Despite this, he is still very passionate about music, even sharing Osaki's dream of making it big with a band one day.

He falls in love with Hachi and they start a short but happy relationship. When Takumi tells Nobu about her pregnancy, Hachi painfully leaves him for Takumi. While he eventually accepts the reasons why she left him, he still fears the possibility of the child being his and he continues to have feelings for Hachi.