WAITTTTT UR COOKINNGGGGGG
Yep, I have confirmed it. She's the last descendant of the great Phoenix clan. The very clan that God loves.
wait so like is she not a legitimate child then? did the raneiro took her from someone or something?
Probably, there was no detailed info about Lincy. The spoilers mentioned about her being the 'daughter' of a goddess who blesses the Phoenix clan. The goddess is also behind MC's reborn; she wants Lincy to be loved and protected.
I think she's a phoenix, given her hair and the way she was reborn after being died from fire. Though phoenix reborn in their ashes.