Katsuma Nonaka (野中勝馬)
BIOGRAPHY (Source: 青の6号 DVD Character Files)
He was an upperclassman during Hayami’s years at the International Naval Academy; they were on the Grampus Development Team together. To learn about Zorndyke’s true intentions, he disobeyed orders and went to the South Pole and encountered the Zorndyke Fleet. After letting Hayami escape, he was never to be found again.
My thoughts & opinions
Katsuma is, like Huang, another enigmatic character in the OVA. Besides being Hayami’s teacher and colleague in the Grampus Research Project, Katsuma may have also had connections with Intelligence/Espionage agencies within Blue Fleet. (How did he get that photograph?)
I see him as basically a principled character with a good sense of foresight/independent thought. He was arguably the first to suggest speaking to Zorndyke directly, and when that failed, bravely sacrificed himself to ensure of Hayami’s escape. Still, there are many questions that were left unanswered – How did he escape? How did he get back to the humans without getting shot first? How did he get those facial scars? These were some of the questions that weren’t addressed in the OVA nor BS6: Antarctica, although some additional dialogue does occur between him and Hayami, before the latter released him from his containment tank.
Its interesting to speculate what might happen to Katsuma after the OVA. He’ll probably not be very well accepted by the hybrids, since it was he who helped Hayami and Kino reach Zorndyke. Will he return to the humans again? Or live as a nomad? He and Mutio would probably get along and relate to each other quite well, given the similarities of their circumstances.