Yea that is why he feels so refreshed and complete when he touches her. The saintess just puts him to sleep while Nina makes him feel refreshed. Rimrim~
but the girl died in the legend,,, did the raws (or novel???) address that yet or we're still far off???
Here’s a theory...the king and saintess are her parents. The red eyes from the king and blonde hair from the saintess.