they left their kingdom in search of their princess that should have pink hair, and they recently found out mc is a girl who has pink hair ... He just mentioned how she reminds him of her father 
AND THEY STILL HAVEN'T PUT TWO AND TWO TOGETHER!!!! 
Comment by Wolfiana on If You Remove the Kind Protagonist’s Mask - Chapter 60
they left their kingdom in search of their princess that should have pink hair, and they recently found out mc is a girl who has pink hair ... He just mentioned how she reminds him of her father AND THEY STILL HAVEN'T PUT TWO AND TWO TOGETHER!!!! 1 Reply
@Wolfiana I believe they mentioned a brother,..