Amai Sweet and Bitter

Here is my Amai Vocaloid Oc's
her Bitter and sweet version
Used- Append rin model
not sure if i could edit, <.<, >.>, But i did she is only downloadable if you contact me AND HAVE A GOOD REASON!
They are not twins just polar opposites Sweet being her good side and Bitter being her bad side I'm looking for a oc to pair her with