Lynxara
Nice post!!
Although it really wasn't Japan's first exposure to him as a director, as he had already been working on Giant Robo: The Animation prior to that.
1. Giant Robo wasn't finished until 1998 due to production delays and as an OVA, was probably watched by fewer people than a TV series would have been. G Gundam finished airing in the 94-95 season and was extremely popular toward its end.
2. Yasuhiro Imagawa's actual first series as director (that I know of) was Mr. Ajikko, an adaptation of a cooking manga. It was pretty popular and aired for around 100 episodes. That said, this isn't really the sort of material Imagawa became best-known for, although there is a guy in Mr. Ajikko who's pretty reminiscent of Master Asia.
3. Imagawa's contributions to Zeta are why Tomino chose him for G, but it should be noted that he did not work on every episode of Zeta Gundam. That show employed fourteen different storyboard artists, in all.
4. Generally, nobody cares much about minor credits like episode direction, storyboard, or unit director when it comes to a show's creative content. It's rare for those creators' individual styles to substantially influence the finished work. The credits that get the most attention tend to be director and producer, who have final say over everything.
