No. The black hair dude (Rei) isn't the Emperor. They look similar for certain reason, but it's a spoiler.
Oh ok, bummer. I was hoping it was the Emperor.
Pleasee whats their connection if you dont mind me asking?
They're siblings. That's why they almost look identical (excepto the hair color).
Thanks for telling me!
Emperor is the dude with the black hair. I'm liking it so far for sure.