In Japan, there is a Japan-specific entry-level formula called Super FJ in which drivers can acquire the rudimentary formula skills while avoiding high costs.
Formula 4 Japanese Championship is very high-level. It is held in Formula 1 circuits including Suzuka and Fuji.
Also, there is a professional category called Super Formula and Super GT which are unique to Japan. Therefore, there is a good chance of becoming a professional driver in Japan.