Many of Tôei’s promising artists, who had for the most part worked on Fujimaru, were determined to follow up on the possibilities the TV show had opened. This meant making a decisive move towards “adult” animation, that is complex storylines, visual experimentations, and a kind of animation that would go beyond the simplistic, round and friendly shapes of the characters of so-called “TV manga”. Just like young manga artists in the 60s had rejected Osamu Tezuka’s "story manga" style to create their own graphic novels called gekiga, artists in Tôei would slowly start making the move towards what would later be called gekiga anime.