Yuiko Ōhara is a Japanese singer and songwriter from Chiba Prefecture who is affiliated with Toho Animation Records. Starting her career as a live performer in 2012, she would also participate in several auditions and competitions. She made her major debut in 2015 with the song "Magic Parade", which was used as the theme song to the short film Little Witch Academia: The Enchanted Parade. Apart from Little Witch Academia, her music has also been featured in anime series such as Land of the Lustrous, Karakai Jozu no Takagi-san, and Hanebado!.
Machiko Saitō, better known by her stage name Machico, is a Japanese singer and voice actress from Hiroshima Prefecture who is currently affiliated with the Horipro talent agency. After participating in an audition organized by Horipro, she made her music debut in 2012, singing a theme song for a PC game. She was cast as the character Tsubasa Ibuki in the mobile game The Idolmaster: Million Live! in 2013. Apart from voice acting, she has performed theme songs for KonoSuba and Age 12. Machico released two albums between 2014 and 2015, and opened her official fanclub in late 2016.