Also, they're both the 5-x bosses in Double Spoiler. And if we take out Byakuren (surrogate mother/worshipping figure in the crew), Nue (newcomer, and is more longtime friends with Mamizou than anyone else), Kyouko (newcomer), Nazrin and Shou (paired together). That's about the only pairing possible.
Deelles said: Also, they're both the 5-x bosses in Double Spoiler. And if we take out Byakuren (surrogate mother/worshipping figure in the crew), Nue (newcomer, and is more longtime friends with Mamizou than anyone else), Kyouko (newcomer), Nazrin and Shou (paired together). That's about the only pairing possible.
It's mentioned that Nue knew Minamitsu and Ichirin prior to the UFO incident, which is probably why there's plenty of Minamitsu/Nue art as well.