New one on me.
I was under the influence of some really good drug (I guess), because I thought I remembered reading that Honda had a hand in the Marusho/Lilac line of bikes. It turns out Honda only worked with the founder of Marusho in a car shop before the war when they were both young men (Honda being 6 years older).
Marusho/Lilac English-speaking website
http://www.marusholilac.com/ml2.htm
But when I Googled Honda Juno M85 I came up with this ADV Rider thread:
http://www.advrider.com/forums/showthread.php?t=694146
That had these three very good links to Japanese-language websites:
(Google Chrome does a real nice job of auto-translating these pages for me!)
http://hm85.fc2web.com/junom85/junolist.html <---this one is a resurrection thread
http://hm85.fc2web.com/Event/juno_ka.html <----these two are events and other images
http://hm85.fc2web.com/Event/Event.html