“A True Novel,” directed by Kiyoshi Kurosawa, manga-inspired “Issak,” written by Itaru Mizuno (“Double Booking”) and “4 Blocks” Richard Kropf, look like potential highlights at this year’s Co-Pro Pitching Sessions, the centerpiece at Series Mania’s Forum, as its projects expand ever more their geographic compass, here welcoming their first titles co-produced by Japan. They are joined by …