You might also vaguely recognise the Kode 7, which appeared at Geneva in 2008 as the ko.7. This is a lightweight, pared back track car, looking a little bit like a two-seater Formula Ford - the detailing here is absolutely stunning, from the toggle switches to the exposed gear linkage to the diamond pattern stitching.
It weighs as little as 790kg, and is available with a choice of engines ranging from 1.6 to 2.4 litres, which poke out through the top of the bodywork behind the cockpit, emphasising the minimalist vibe.
Also making its world debut in Tokyo is the Kode 9. This low-slung coupe is doing absolutely nothing to discourage Speed Racer comparisons with that white and red colour scheme, but Okuyama says, "This is my message to today's car industry which seems stuck in a rut of overly complicated lines and styling based on the lowest common denominator."
Retro, yes. Bad on that basis? Absolutely not, as far as we're concerned. And underlining its credentials, the one on display is powered by a 2.0-litre Honda VTEC engine enhanced by an HKS supercharger kit to the tune of 370hp.
Both the Kode 7 and the Kode 9 are based around a 'hydro-formed aluminium chassis' - no prizes for guessing this comes from a Lotus Elise. But the Kodes use their own suspension design front and rear, and Okuyama will happily build you one in right- or left-hand drive.
The price? Well, that's probably open to some interpretation as it crosses international borders, and since the cars are built to order there are plenty of variables involved. However the Kode 7 Exclusive officially starts at 25 million Yen, which is around £155,000.