It's true, the main protagonist of the series makes a suprise appearance in Pirate Madeline, a webcomic drawn by my good pal Randommode!
The page Aozora appears on is the tenth page, shown here. On the second panel, take a close look at the ship the giant Golem crushes apart!
DOES THAT MAN LOOK FAMILIAR TO YOU?
It's pre-mid-2011 (aka classic) Aozora, in all his cyan glory. Looks like he need some backup from the Jetters!
Thanks much to Random for drawing this. C;