I usually prefer blood, but Kotori is one of the rare exceptions of NBR being superior to BR.
Blood related, but genetically modified to be genetically distant from you allowing safe incest.
That's hardly fair. Kotori is like top 3 at the very least. Mana is at the higher ends near the top 10.
It doesn't matter since I'd fuck both anyways.
Kotori and Mana are lolis too.
Kotori > Yoshino > Natsumi > Mana
Moar like Rape A Paper