So to go back to chapter one Ria is originally from another time/world and was reborn as the Ria we know now, but until now we don't know anything about her old self and it seems everyone forgot about that fact ?
Maybe we will know later l, the author forgot too or it was just a thing to have a reason for the fact that Ria was able to think like a grown up as a baby ...
She's saying it to him like it's nothing xD but basically she said I love you
But isn't he her half uncle ?
He isn't. Asissi's mom was married and had him. She became the emperor's mistress/concubine later