Blood Type: O
He was born in December 7, 1975. His name is Yuu Yuki Nagata (長田悠幸), but his pseudonym is Osada Hiroyuki (長田裕幸) for his first works.
In 1996, he debutes at Young Magazine. Then, in 2002 and 2005 he draws "Toto" (at Magazine Special) and "Toto!" (at Weekly Shonen Magazine), respectively. Between both of it, he draws "C[si:]" (Shonen Gahosha), "Tokyo Junpakuka Keikaku" (Enterbrain) and "Gear Rally" (Kawade), and he changes his pseudonym to Osada Yuko (長田悠幸). In 2006, he draws "Hokuto no Ken Raiou Gaiden" at Comic Bunch (Shinchosha). In 2007, he comes back to Magazine Special with "Tribal 12", and when he finish it, "Hokuto no Ken Raiou Gaiden" goes to anime. This year, in November, he starts his current work: RUN day BURST, at Shonen GanGan (Square-Enix).
He is married.