Worldwise I'm leaning towards the planet (I welcome name suggestions) being many times larger than earth. I know that such an environment wouldn't be likely to support the sort of ecosystems we'll be playing in but for the sake of the setting I'll be hand-waving it away; Orendo keeps things habitable. Full stop.

I'm attached to it being super massive for several reasons, not least of which to allow for an [i][u]unfettered decadence[/u][/i] of architecture. Consider it the norm for this world's wealthy elite to rely on trains or passenger aircraft to navigate their gargantuan estates. Secondly, fantasy worlds need monsters to slay (Even if our roleplay doesn't focus on that fact), and a world of such scale allows for animals that are to us what we are to ants. With their existence nature is more adversarial to the common man, though it's not with these giants that they'd most often contend. Artillery, fortifications and human ingenuity are more than enough to keep these giants at bay, a fact that is inherently problematic in that the safer our settlements are from such predators the more inviting they become to for their prey. Creatures great and small are always seeking to slip passed (Even over or under) a city's defenses and eke out a living best then can, to the peril of those that already reside there. More on this in the IC.

In regards to technology the setting will be much like the real world, more advanced in some ways and less in some (No internet!) The crux of it being with the existence of magic EVERY problem looks like solving it should start with the orendic sciences; never having to do without meant that more mundane solutions were often overlooked. As an example, they don't have an analog to the space program. Their own world is so massive that few have had the ambition to set their sights towards the stars. Likewise computing technology is primitive at best and certainly not very conducive to entertainment. Guns however do exist, though it's a toss up on whether they'll be conventional fare or if I'll be relying on magic here as well. Something I have decided however is that military grade rounds are Tsuked (Henceforth referred to as seeker rounds), deploying fins mid flight for limited homing capability. Though illegal for civilian use wildfire rounds are an (even more) unsanctioned alternative ever in high demand. Assembled and sold in shady basements or warehouses (To munitions what a meth lab is to pharmaceuticals) they're at best unreliable, almost always crafted from abused animals as it's easier to make a Tsuk mean than motivated. 

Returning to the topic of Tsukumography, it is possible to use a human being as a basis for the imprint and graft them to an object. However--doing so is murder. Souls and the afterlife are no more evidenced in this world than in ours; as such it's the old 'Star Trek Teleporter' scenario. The original is destroyed and a copy (in this case imprint) is created elsewhere, moreover it is by this process that a disembodied mental construct is created, so you're getting even less. Some optimists maintain that in time the process may be perfected; allowing for infinite copies to be printed from a single donor animal.

Being the foundation of much of the world building orendo sorely needs to be squared away with a cut and dry explanation. (I'm not quite there yet.) It doesn't have a molecule or particle associated with it; so though it's often thought of like a substance by the laymen it's more properly classed as a natural phenomenon, like gravity. Orendo will in its natural state 'saturate' its surroundings, becoming attached to conventional matter or in its absence energy. Objects with more mass attract more orendo and as such solids 'sap' the magic from surrounding liquids, gasses or plasma. Gravity has no effect upon its distribution, this is what allows it to escape stars; slipping away as easily as light. Matter and energy may also become oversaturated, displacing already attached orendo as more arrives. Because of this it has a tendency to 'sink' into the earth.

Orendo, as magic, is utilized to structure matter or energy in a way that would not be normally possible. This happens naturally as the little tugs and pulls of its presence that fill reams of textbooks in setting. An artificial lattice can be constructed however, and such is the basis of Tsukumography and other orendic sciences. To dumb it down (Or rather not flesh it out any more than needed :P) a medium much denser than the surroundings is used to coerce the flow of orendo in and out of an object; usually mercury, basalt or osmium powder. This forms the foundation of the ritual and is the most critical component--the destruction of which 'kills' a Tsuk, as it's the only thing 'holding' its imprint together. Such paths are likewise used in construction and agriculture to support or stymie plant growth, with rock and metal requiring a harsher hand.

I think I may expand on the 'drugs for magic' idea I had awhile back by way of an inhaled substance called 'surge', essentially just orendo saturated mercury vapor used in conjunction with osmium lattice implants. I'll pick through this idea later.