After watching the 4th episode i am pretty sure that he didn't sense his sister's feelings but da hyun's! Maybe they were both kidnapped together and bc of ptsd she forgot everything or maybe the kidnapped hit her on the head so she forgot everything idk...but the scene where he and his sister played rock paper scissors is still messing my mind....what if it's just a coincidence? I don't think so....
I just finished and god damn it was amazing but i am reallllyyy confused about the ending why didn't he meet up with yoo je yi? Did he leave his old team or smt??? And who is that unknown number?