I see ppl confused about the fam tree but i remembered it as:
Empress+Emperor = Cayena
Empress+Duke Kedrey= Rezef
Emperor+Lover= Edel
Duke Kedrey+Duchess= Raphael
So basically:
Cayena (Legitimate)
Edel (Illegitimate)
Rezef (Illegitimate)
Cayena+Rezef= same mother
Cayena+Edel= same father
Rezef+Edel= no blood relation
Rezef+Raphael= same father
Cayena+Raphael= no blood relation
To sum it up:
It’s the empress’s fault for being horny, oh wait no— it’s Duke Kedrey’s fault for being hot. Yepyep