Regarding the case of North Korean prisoners in Ukraine

Wasn't it a sensitive issue because Ukraine keeps saying they will send the prisoners to South Korea—even though they could use them for prisoner exchanges with Russia—but in return, they keep demanding that South Korea provide offensive weapons?
I don't want to get involved in that war, so it is quite frustrating that they keep asking for weapons.
This is separate from the fact that North Korea's response to the landmine issue has been lackluster.