This article is also from 2021 and things have changed a bit in the North. North Korea changed their constitution a couple of years ago and removed any mention of unification with the South, and defined their territory as basically the existing North/South split (aka 38th parallel). South Korea has been redefined from 'partner in national unity' to 'enemy to be destroyed, by nuclear weapons if need be'.
There's a lot of pretty interesting analysis of North Korea at the 38 North blog (https://www.38north.org/), among other good sources.
In tech specifically this leads to some surprising results such as transit planning being very ineffective or broken in google maps due to onshore data storage requirements. Subway alignments are regarded as sensitive info
fun fact, Japan and Russia are technically in a state of war too. The World War II hasn't ended. They have never signed a treaty over the Kuril Islands, and they both claim them.
https://en.wikipedia.org/wiki/Kuril_Islands_dispute
https://en.wikipedia.org/wiki/Soviet%E2%80%93Japanese_Joint_...
Whenever North Korea threatens them, simply reply with how sorry you are their brother nation feels this way, and you wish them a peaceful and successful future.
Leave the DMZ intact of course, but just unilaterally declare you are not actually at war and have nothing but brotherly love for them.