Yay. ^^
Quick explaination: Emily and Yuuna are half demons; Emily is half husky dog demon, Yuuna half deer.
They're in, well, sometmes red and blue are referred to as opposites, but it depends on the person you talk to.
Their personalities are also opposite; Yuuna revelas her emotions and is sweet. Emily hide most of hers behind a tough front, and wats to appear strong. (Yuuna is the one to the right, Emily is to the left.)
Base:
Kawaii Hannah