Wakana Ootaki is a Japanese pop singer. She was one of the vocalists of the FictionJunction project started by Yuki Kajiura, and is a core member of the vocal group Kalafina. She is currently signed w

"sprinter/ARIA" is the second single by Kalafina, featuring Wakana Ootaki and Keiko Kubota, along with two new members, Maya Toyoshima and Hikaru Masai. "ARIA" was used as theme song for the fourth ch