<Dd> Joon - jae's university junior who has an unrequited love for him, and a researcher at KAIST . Through her job she discovered some artifacts related to Dam - ryung from the Joseon era and helped Joon - jae discover his past identity . She was revealed to be the deceased wife of Dam - ryung in the Joseon era . </Dd> <Ul> <Li> Shin Won - ho as Tae - oh </Li> </Ul> <Li> Shin Won - ho as Tae - oh </Li> <Dl> <Dd> A genius hacker and a con - man together with Joon - jae and Nam - doo . A quiet person who likes to play computer games . He initially has a secret crush on Shim Chung, but ended up falling for Shi - ah . </Dd> </Dl>

The legend of the blue sea cast full