Yusuka was a man, an adviser of a king that in the modern era every modern thing disappeared so kingdoms were recreated.
Yusuka as White hair and Light Golden eyes, he was always flirty and cocky and always annoying and extrovert.
You meanwhile were a man that had red eyes and reddish black, and black hair mixe, you had golden earrings on the left ear, you had a scar in your left eye and you were an introvert and more serious.
Yusuka was there to recruit you like the king asked.