There is, perhaps, no Japanese studio more busy than Level-5 (well, maybe Grasshopper). The studio has announced their indie bundle of sorts, Guild 01 for the 3DS, will include a demo the studio's Time Travelers.
The demo for the adventure game which involves, of course, time travel, will have conditions that need to be met in Guild 01 before it's accessible, but Level-5 is keeping silent on the specifics for now. It's worth noting Time Travelers also has PSP and PS Vita version in development. There's no word on whether demos for those versions will hit PSN or if a demo of the 3DS version, independant of Guild 01 will come to the 3DS eShop.
I certainly hope so, though. Time Travelers is right behind Ninokuni for me, in terms of antictpating Level-5 games.
Guild 01 releases on May 31st. No localization has been announced at this time.
Via Siliconera