Well this is a mighty stacked cast, and with a source material in an interesting period era is one of the bigger project K-dramas on deck. Whale Star: Gyeongseong Mermaid has confirmed earlier casting news and unveiled the full cast of Moon Ga Young, Choi Woo Shik, Heo Nam Joon, and Gong Seung Yeon. It’s a story set in 1920’s era Korea during the time of the Japanese occupation and the drama revolves around pro-independence activists. Directing is award winning movie director Hur Jin Ho adapting the webtoon of the same name.