Question: What nationality was the actor who starred in 2015 South Korean period fantasy film directed by Kim Dae-seung?
Sentence (from "Yoo Seung-ho"): After his two-year mandatory military service, he headlined the legal drama "" (2015) and historical films "The Magician" (2015), "" (2016), as well as historical drama "" (2017).
Relevant evidence: No