Yōko Hikasa is the voice actress of Mio Akiyama.
She was born on July 16, 1985, is from Kanagawa and is now affiliated with I'm Enterprise.
Other Roles
2007
- Sketchbook ~full color's~ - Minamo Negishi
2008
- Ikki Tousen: Great Guardians - Girl B
- Ghost Hound - Primary School Girl B
- Persona: Trinity Soul
- Monochrome Factor - Female Student
2009
- Asura Cryin' - Ritsu Shioizumi, Kotori Arayashiki
- K-On! - Mio Akiyama
- Tetsuwan Birdy: Decode 02 - Witch
- Luminous Arc 3 - Angel Miria
- Toradora! - Female Student A
- Nogizaka Haruka no Himitsu: Purezza - Iwai Hinasaki, Yayoi Kayahara
- Basquash! - Child B
- Umineko no Naku Koro ni - Satan
2010
- Chu-Bra!! - Kiyono Amahara
- The Qwaser of Stigmata - Hana Katsuragi
- Ichiban Ushiro no Daimaō - Junko Hattori
- K-On!! - Mio Akiyama
- WORKING!! - Izumi Takanashi
- Seikimatsu Occult Gakuin - Maya Kumashiro
- Seitokai Yakuindomo - Shino Amakusa
- Giri Giri Airu Village - Nyasuta
- Sora no Otoshimono Forte - Hiyori Kazane
2011
- IS (Infinite Stratos) - Hōuki Shinonono
- Kore wa Zombie Desu ka? - Seraphim
- Beelzebub - Azusa Fujisaki
- Rio: Rainbow Gate! - Linda
- Dog Days - Brioche d'Arquien
- Moshidora - Minami Kawashima
- Nurarihyon no Mago: Sennen Makyou - The Daughter of Kyokotsu
- Ro-Kyu-Bu! - Saki Nagatsuka
- The Qwaser of Stigmata II - Hana Kasuragi
- Working'!! - Izumi Takanashi
2012
- High School DxD - Rias Gremory
- Inu x Boku SS - Nobara Yukinokouji
- Code: Breaker - Sakurakouji Sakura
- Gokujyo. - Akabane Aya
- Danshi Koukousei no Nichijou - Yasu
- Hayate The Combat Butler! CAN'T TAKE MY EYES OFF YOU - Kayura Tsurugino
- Kore wa Zombie Desu ka? Of the Dead - Seraphim
- Campione! - Erica Brandelli
2013:
- Hayate The Combat Butler! Cuties - Kayura Tsurugino
2014:
- Bladedance of Elementalers - Restia Ashdoll
Drama CD
- Watashi ni xx Shinasai! - Yukina Himuro
- Karneval - Tsubaki
OVA
- Final Fantasy VII Advent Children - Edge Citizen
Movies
- Keroro Gunso the Super Movie 3: Keroro vs. Keroro Great Sky Duel - Woman C
- Sora no Otoshimono the Movie: The Angeloid of Clockwork - Hiyori Kazane
- K-On!: The Movie - Mio Akiyama
- Hayate the Combat Butler! Heaven Is a Place on Earth - Kayura Tsurugino
Games
- Black Rock Shooter - Shizu
- Ken to Mahou to Gakuen Mono - Female Gnome
- Granado Espada - Berroniff
- MegaZone 23: Part III - Mami Nakagawa
- Dangan-Ronpa: Kibou no Gakuen to Zetsubou no Koukousei - Kirigiri Kyouko
- L@ve once - Meru Toritome
- Lollipop Chainsaw - Juliet Starling (Japanese PlayStation 3 Version)
Dubbing
- American Graffiti - Carol (Mackenzie Phillips)
- Without a Trace - Becky
- Scream 4 - Jill Roberts (Emma Roberts)
Singles & albums
As the voice actress for Mio Akiyama in K-on, she participated to four singles and two albums.
- "Cagayake! Girls" ranked #2 on Japanese Oricon singles charts.
- "Don't say 'lazy'" ranked #3 on Oricon singles charts and was awarded *Animation Kobe's "Best Song" award.
- "Light and Fluffy Time" (ふわふわ時間?) ranked #3 on Oricon singles charts.
- "Mio Akiyama" (秋山澪?) ranked #2 on Oricon singles charts.
- Hōkago Teatime (放課後ティータイム?) ranked #1 on Oricon albums charts.
- "Rhythm Dimension" along with Shiina-Tactix.