Biography
Akio's friend who helps him tune the Devil Z before he met Kitami, he owns a local tune shop with the help of his brother Ma. He is also the one watching over Akio when he tunes the Z. Ko-chan's car is a Mazda RX-7 GT Limited (FC3S). (Wikipedia.org)
Appearances
Ko-chan FAQ
What anime is Ko-chan from?
Ko-chan is a character in Wangan Midnight.
What is Ko-chan's Japanese name?
Ko-chan is written コウちゃん in Japanese.
Where can I watch Ko-chan?
Open the Wangan Midnight page for licensed streaming links and the full episode list.