Well, Superku. That's just a bit too lovely and perfect. Questions!
1> Does it rely on a sort-of hallway/room layout? (that is, will it give every scene stunning and perfect dynamic shadows, or does it specifically take advantage of 2D layouts to give that lovely effect?)
2> Will this perfect shadow with perfect penumbra be cast on other objects, such as props and characters?
3> Will you give us a running techdemo, or at least a video?
4> Will you tell us how you did it and/or make it accessible in some form to the community, even if for a price?

It's really just gorgeous. Well done!

Formerly known as JulzMighty.
I made KarBOOM!