Yoshiichi Akahito’s original Shikabane Hime comes the continuation of this anime series.
Shikabane Hime: Kuro the continuation of Shikabane Hime: Aka, entitled as the first anime Shikabane Hime as the Corpse Princess: “Red as Aka” to “Black for Kuro”. The continuation of the series Shikabane Hime: Aka will premier this January.
Entitled “Corpse Princess”, the undead protagonist Makina Hoshimura, an undead girl who seeks to hunt down 108 corpses in order to go to heaven.
[Source]
Just moé 
Interesting Read! Very detailed blog,thanks for sharing
tnx, it helped me understand it
because in my website where im watching the anime they pot only the second one (kuro) and i got confused because i started watching the first one (aka) and i didnt fond it and i got so confused and tried to think why its like that, if its a mistake in the name or is it 2 seasons, and if that so what season is this and what is this so anyway..
tnx for the help XP
(i think im still a bit confused from myself XDD)