Devil or an Angel ID

ID for the two characters drawn my

Enjoy

I got the feather background thing from here:
[link]

I can't find the exact image anymore though D:

art and characters copyright: Maria-Minamino and Suggii

the devil is Maigo (red hair)
and the angel is Suiren (black hair)
I just thought it would be cool for Maigo to have the light power and Suiren the dark in this picture to portray the yinyang effect thingy. They're opposite but the same...best friends...sisters