Kotonoha no Sora e sixth album by Yoshioka Aika. Yoshioka Aika (吉岡亜衣加) is a Japanese singer-songwriter signed to TEAM Entertainment label and Rock'n' Banana agency. She made her debut in 2009 with the album Harari and is known for singing theme songs for the otome game series Hakuouki.
Amamiya Sora is a Japanese seiyuu and pop singer. In September 2016 she released her first solo studio album Various BLUE.