Yui Sakakibara (Japanese: 榊原ゆい, Hepburn: Sakakibara Yui, born October 13) is a Japanese voice actress, choreographer, dancer and singer from Hyōgo Prefecture. She appeared on Kōhaku Uta Gassen as background dancer behind Ami Suzuki in 1999 and 2000. She used the name Mayo Hinano (雛野 真代(まよ), Hinano Mayo) and others in her previous roles. She is also credited as FES from the band "Phantasm" (ファンタズム) in the Science Adventure visual novel series, which is a stage name of her character Ayase Kishimoto from Chaos;Head.