I was in Japan very briefly (too briefly) at Easter and picked up a whole heap of catalogues from my friend's bushwalking shop. This is some of the stuff that I thought might be of interest:
Snowpeak Vole 25
http://www.snowpeak.co.jp/newproducts/vole25/index.html
Edit: here's a better link: clink on the orange arrow for more photos.
http://www.snowpeak.co.jp/catalog/products/detail/3444
670 grams
25litres
This pack is specifically stated to be for one day trips. Details that aren't visible from the link above are that it does have a small top pocket (it's part of the toggle flap), an internal bladder pocket and the shoulder straps can be tucked behind the back panel. As far as I know, this is SP's first day pack but I'd suspect that it's part of a family, with more to come.
Axes Quin Kunado
This is a backless windproof smock made of Pertex Quantum which weighs 43 grams. It packs into a small in-built pocket and ends up about the packed size of one of the Sea to Summit silnylon shopping bags. In concept it's the same as the Camp Flash Anorak which BPL recently reviewed – but it's 2 and a half times lighter!
http://axesquin.co.jp/news/?p=1
Axes Quin Superfly Rain Smock
This is a 200g Paclite smock (likely for a size M). That's pretty light given that it appears to have reasonable length and is quite baggy. I like the cut and styling because it strongly resembles my early 90 Patagonia Pneumatic smock. But I'm not convinced that the hood cord will work in an appropriate way …

