Yoko has done the following roles in anime.

Alice in Cyberland	Alice
Angelique -Shiroi Tsubasa no Memoir [2000]	Angelique
Boku no Marie	Mari
Ex Driver (eX-D)	Endou Lorna
Ganbarist! Shun {Episode 2}	female student
Golden Boy {4}	Ayuko (young)
Heartcatch PreCure [2010]	Shibata Lisa
Idol Project [1995-1996] {1}	?
JaJa Uma! Quartette	Casa Clover 17th
Kyuumei Senshi Nano Saber	Kei
Lain	Mizuki Arisu
Meitantei Conan (Detective Conan) {episode 217}	Ishiguro
Ninja Mono	Inaba
Pocket Monsters	Botan