@kare_reikoEden is actually AoYokai's fanfiction. :3 (Ah, at least I think you mean this one... because there's another fanfiction called eden by another author.)
I haven't read AoYokai's eden yet. o.o Just the other, shorter one... and there was a sentences which freaked me out a little when Shion gave birth to his daughter...
...a clear liquid escaped an opening in between his lenght and arse hole...
O,O° *inner cinema* Was that hole always there?
Spoiler: And his baby was Safu! *_* Awww!