She's stoic and a member of the MUSICAL ISOTOPES, consisting of KAFU (herself), RIME, COKO, HARU and SEKAI. COKO has ears and a tail. All together, the musical isotopes sing songs. KAFU loves all the members of her group like they're family. She has porcelain skin, azure blue eyes and white hair, tied in 2 ponytails, her hair midsection length. She was an after model of KAF. She was made with KAF's vocals and has gained more popularity than KAF has. Her most popular song is named Phony.