서울병풍자수 천지인(금적)

I also can't find the Korean words for those armrest cushions, just Japanese terms from a seller who markets through Amazon-dot-jp.

the seating arrangement is called a 보료 from what I remember

The general Japanese term is "hijikake", which seems to just mean "armrest". The long cushion is called "chanchin" and the cube is "tanchin", but Google Does Not Like Me.

Uh, what's that in romaji, Chandni, please?

Boryo

TY! I can make head nor tails of Hangul, sadly.

welcome i am only a beginner too.. but this site calls it a "예단보료세트" which is "Yedan Boryo Set"

in English

I think "Yedan" might be the style?

I found this in Wiki, but not off any of my other searches (grr):
"...a traditional Korean mattress (boryo) and Korean cushions (bangseok)..."

Bangseok doesn't Google well in romaji at ALL.

I found a term translating that Japanese merchant of "polyo" or "pollo", but it might just be a localization of "boryo".

Hah, look what I found:Project K Korean fancy mattress ( BoRyo ) 3Li

sigh I can't find anybody selling them in North America, apparently; I can't find the specific names for the armrest cushions (which is what I actually want); nor how they're constructed. At least I got closer.

chandnikhondji: Thank you SO much!

you're quite welcome

I have been googling and I can find these pillows online when I search for Traditional Korean Block Pillows but I have not yet figured out what they are called. There is a possibility that those are traditional style Buckwheat pillows. Usually they used wooden "pillows" called Mok'chim but these are not wood unless they have a fabric covering to look nicer.

I tried that Google to see what you were finding, and I think that's pretty much all sleeping pillows, not the armrest cushions that go behind a desk.