I really hope this is an indication we'll see more NISA games published on Steam. This is pretty cool seeing publishers like them and Xseed appearing on there. I feel like (or at least hope) it'll breath more life into their potential sales.
In regards to this game though, what kind of game is it exactly? Is it an rpg? is it an srpg? is it a zelda style game? I can't really tell from what I've seen.