A previously unpublished Osamu Dezaki interview, brought to light thanks to the 2018 book "Complete Analysis! Osamu Dezaki, the Man who Created the Tomorrow’s Joe Anime"
Director Osamu Dezaki started a revolution at Tokyo Movie in the 70s, according to this 1997 interview on The Adventures of Gamba.
Tokyo Movie also adapted Attack No. 1. Initially with Aim for the Ace! I was told to adapt it just like they had done for Attack No. 1. But it became very clear that if Dezaki was helming the adaptation of Aim for the Ace! then it was not going to turn out like that.