He had no idea when it happened precisely. Maybe sometime in between their "Twilight" comeback and their "Road To Kingdom" experience, maybe one of the million times the other hugged him from behind all of a sudden or when he talked animatedly to him about one of the new tracks he was working on. Hwanwoong had fallen for Youngjo. During one of ONEUS last fan signs of their album "BINARY CODE", a foreigner To Moon gives Hwanwoong a stuffed dog that looks like Sunny as a gift. What he wasn't expecting was to wake up the next day on Youngjo's bed in Sun's body and discover a lot of things he had no idea about.