
Quick answer — Hiroyuki worked on Girlfriend, Girlfriend Season 2 (Original Creator), The Comic Artist and Assistants Specials (Original Creator), The Comic Artist & His Assistants (Original Creator) and 2 more anime.
Hiroyuki worked on Girlfriend, Girlfriend Season 2 (Original Creator), The Comic Artist and Assistants Specials (Original Creator), The Comic Artist & His Assistants (Original Creator), AHO-GIRL (Original Creator), Girlfriend, Girlfriend (Original Creator).