While both skaters don't have Olympic experience, the pair has achieved notable acclaim together. In August 2016, the duo won gold at the Pairs Figure Skating event in the Asian Figure Skating Trophy in Manila, Philippines. And less than six months later, they won bronze in the same discipline at the Asian Winter Games in Sapporo, Japan.
However, in April last year, Ryom and Kim finished 15th at the World Figure Skating Championships in Helsinki, Finland.
The forthcoming Winter Games will be North Korea's first since 2010. Aside from boycotting the 1984 Games in Los Angeles and the 1988 Games in Seoul, the pariah state has participated in all Summer Games since 1972.
And while North Korea has generally exceeded expectations in the Summer Olympics, its track record at the Winter Games is not nearly as impressive. The country has picked up just two medals in eight previous appearances — in the speed skating and short track speed skating disciplines.
— CNBC's Nyshka Chandran contributed to this report.
Disclosure: CNBC parent NBCUniversal owns NBC Sports and NBC Olympics. NBC Olympics is the U.S. broadcast rights holder to all Summer and Winter Games through the year 2032.