Hyo-sei is a Japanese voice actor and singer who was born in 1973. Throughout her career, she has been known by three names: Kumiko Yokote, her full name which she no longer uses, Hyo-sei, her current stage name, and Erena/Elena Kaibara, her alias for Eroge-related characters. She mostly voices Genki Girls and Tsunderes, though on occasion she'll voice a seemingly Emotionless Girl as well, like Tei Iku from Koihime†Musou.She also has a pretty good singing voice, being able to sing both in a cutesy manner (mostly for Eroge songs) and in a more normal register. She released her first single, Fuyu Hanabi, on her birthday (April 21) in 2010.
- Eru in Shugo Chara!
- Venis in They Are My Noble Masters
- Shion Toumori in Strawberry Panic!
- Natsuki Takamizawa in Crescent Love
- Tsunomon in Digimon Frontier
- Neon in Tatsunoko Fight
- Teiiku (actually Cheng Yu) in Koihime†Musou
- Montblanc in Final Fantasy Tactics Advance Radio Edition
- Superbia/Misao Kusakabe in 11eyes
- Shirayuki in Sister Princess
- Sophia/Veludo in Lime-iro Senkitan
- Mizuha Shiratori in G-Senjou no Maou
- Irina Vladimirovna Putina in My Girlfriend Is the President
- Narukami in Kamisama Kiss
- Natsuki Takamizawa in Yoake Mae Yori Ruriiro Na