is a Japanese voice actress from Tokyo, Japan. <!-- She is also a singer, both solo and with the Hinata Girls. --> She also provides the voice samples for Crypton Future Media's Vocaloid voice synthesiser software, Megurine Luka. Asakawa is currently a freelance voice actress and was previously attached to Arts Vision (as of October 1, 2014).
She was married to voice actor Showtaro Morikubo from 2007 until their divorce in 2009. She served as co-host of an internet webshow Otaku Verse Zero with Patrick Macias, a previous editor-in-chief of Otaku USA.
She is best known for her role as Rider and her various other incarnations of the character from the Fate/stay night franchise.
Filmography
Theatrical animation
- Cyber Team in Akihabara: 2011 Summer Vacation (1999) as Tsugumi Higashijujo
- Azumanga Daioh: The Animation (2001) as Sakaki
- Hamtaro film series (2001–2004) as Tongari
- RahXephon: Pluralitas Concentio (2003) as Shinobu Miwa
- Mobile Suit Zeta Gundam: A New Translation (2005) as Rosamia Badam
- Hells Angels (2008) as Kuronora
- Fate/stay night: Unlimited Blade Works (2010) as Rider
- K-ON! the Movie (2011) as Norimi Kawaguchi
- Fate/stay night: Heaven's Feel (2017–2020) as Rider
- Detective Conan: The Fist of Blue Sapphire (2019) as Sherilyn Tan
Tokusatsu
- Tetsuwan Tantei Robotack (1998) as Mimeena
- Chousei Kantai Sazer-X (2005) as Water General Aqual
Anime television
{| class="wikitable"
!Year
!Title
!Role
|-
| rowspan="2" |1997
|Those Who Hunt Elves 2
|Rena
|-
|Chō Mashin Eiyūden Wataru
|Mario
|-
| rowspan="3" |1998
|Record of Lodoss War: Chronicles of the Heroic Knight
|Shiris
|-
|Cyberteam in Akihabara
|Tsugumi Higashijujo
|-
|Bubblegum Crisis: Tokyo 2040
|Priscilla S. "Priss" Asagiri
|-
| rowspan="5" |1999
|Space Pirate Mito
|Shin
|-
|Gokudo
|Nanya
|-
|Shin Hakkenden
|Rei
|-
|Jibaku-kun
|Alibaba
|-
|Seraphim Call
|Kasumi Kurenai
|-
| rowspan="4" |2000
|Boogiepop Phantom
|Nagi Kirima
|-
|Love Hina
|Motoko Aoyama
|-
|Vandread
|Jura Basil Elden
|-
|Shin Getter Robo vs. Neo Getter Robo
|Sho
|-
| rowspan="7" |2001
|Viper GTS
|Carrera
|-
|Beyblade
|Raju
|-
|Immoral Sisters
|Rumi Kitazawa
|-
|Vandread: The Second Stage
|Jura Basil Elden
|-
|Gekito! Crush Gear Turbo
|Hiroomi Taki
|-
|Hikaru no Go
|Yūki Mitani
|-
|Angel Blade
|Nailkaizer
|-
| rowspan="4" |2002
|RahXephon
|Shinobu Miwa
|-
|Love Hina Again
|Motoko Aoyama
|-
|Azumanga Daioh
|Sakaki
|-
|Detective Conan
|Terumi Hoshino
|-
| rowspan="4" |2003
|Crush Gear Nitro
|TB
|-
|Immoral Sisters 2
|Rumi Kitazawa
|-
|Kaleido Star
|Pamela
|-
|Zatch Bell!
|Kiyami Tsukishi
|-
| rowspan="12" |2004
|Gravion Zwei
|Mizuki Tachibana
|-
|Kyo kara Maoh!
|Berma
|-
|Pugyuru
|Kanato
|-
|Samurai 7
|Sanae
|-
|DearS
|Eiko
|-
|Lupin III: Stolen Lupin
|Rebecca Lambert
|-
|Sweet Valerian
|Pop
|-
|Detective Conan
|Shunya Ogata
|-
|School Rumble
|Itoko Osakabe
|-
|Mobile Suit Gundam Seed Destiny
|Krista Awbrooke
|-
|Black Jack
|Tom
|-
|Angel Blade Punish!
|Nailkaizer
|-
| rowspan="8" |2005
|Starship Operators
|Renna Satomi
|-
|Buzzer Beater
|Lazuli
|-
|MÄR
|Sarah Band
|-
|Tsubasa: RESERVoir CHRoNiCLE
|Caldina
|-
|Idaten Jump
|Whip
|-
|Gunparade Orchestra
|Momoka Kudou
|-
|Perfect Dark Zero
|Mayhem
|-
|School Rumble: 1st Semester Extra Class
|Itoko Osakabe
|-
| rowspan="5" |2006
|Brighter than the Dawning Blue
|Karen Clavius
|-
|Fate/stay night
|Rider/Medusa
|-
|Kyo no Gononi
|Koji Imai
|-
|School Rumble: 2nd Semester
|Itoko Osakabe
|-
|Spider Riders
|Beerain
|-
| rowspan="5" |2007
|Naruto: Shippuden
|Fūka
|-
|Fire Emblem: Radiant Dawn
|Yeoha
|-
|Ikki Tousen: Dragon Destiny
|Shiryū Chō'un
|-
|Buzzer Beater II
|Lazuli
|-
|Bamboo Blade
|Konishi
|-
| rowspan="3" |2008
|Our Home's Fox Deity
|Enju
|-
|Ikki Tousen: Great Guardians
|Shiryū Chō'un
|-
|Mission-E
|Katsuura Miharu
|-
| rowspan="5" |2010
|Chu-Bra!!!
|Takatō
|-
|The Qwaser of Stigmata
|Eva Silver
|-
|Ikki Tousen: Xtreme Xecutor
|Shiryū Chō'un
|-
|K-ON!!
|Norimi Kawaguchi
|-
|Amagami SS
|Hibiki Tsukahara
|-
| rowspan="7" |2011
|Rio: Rainbow Gate!
|Queen
|-
|Freezing
|Arnett Macmillan
|-
|Nura: Rise of the Yokai Clan: Demon Capital
|Jami Yokoshima
|-
|Twin Angel: Twinkle Paradise
|Ms. Saijō
|-
|Manyū Hiken-chō
|Mizuki
|-
|Carnival Phantasm
|Rider
|-
|Maji de Watashi ni Koi Shinasai!
|Momoyo Kawakami
|-
| rowspan="6" |2012
|Amagami SS+
|Hibiki Tsukahara
|-
|Brave10
|Anastasia
|-
|Upotte!!
|Ms. Fujiko
|-
|Tanken Driland
|Angela
|-
|Aikatsu!
|Honoka Tsukikage
|-
|Love, Election and Chocolate
|Satsuki Shinonome
|-
| rowspan="6" |2013
|Senran Kagura
|Daidōji
|-
|Sasami-san@Ganbaranai
|Juju Tsukuyomi
|-
|Ore no Imōto ga Konnani Kawaii Wake ga Nai
|Misaki Fujima
|-
|Arata: The Legend
|Osome
|-
|Love Lab
|Yoshida
|-
|Fate/kaleid liner Prisma Illya
|Rider
|-
| rowspan="5" |2014
|Nobunagun
|Isaac Newton/Jess Beckham
|-
|The World Is Still Beautiful
|Mina
|-
|Riddle Story of Devil
|Irena
|-
|Akame ga Kill!
|Leone
|-
|Fate/stay night: Unlimited Blade Works
|Rider
|-
| rowspan="4" |2015
|The Testament of Sister New Devil
|Chisato Hasegawa
|-
|Minna Atsumare! Falcom Gakuen SC
|Ilya Plate
|-
|The Testament of Sister New Devil BURST
|Chisato Hasegawa
|-
|Magical Girl Lyrical Nanoha ViVid
|Micaiah Chevelle
|-
|2016
|Hybrid × Heart Magias Academy Ataraxia
|Zelshione
|-
| rowspan="2" |2017
|Schoolgirl Strikers Animation Channel
|Tierra Sensei
|-
|Nora, Princess, and Stray Cat
|Shachi Yuuri
|-
| rowspan="2" |2018
|Killing Bites
|Kaori Rikujō
|-
|Today's Menu for the Emiya Family
|Rider
|-
| rowspan="2" |2019
|Fate/Grand Order - Absolute Demonic Front: Babylonia
|Ana, Gorgon
|-
|Azur Lane
|Ranger
|-
|2021
|Getter Robo Arc
|Sho Tachibana
|-
| rowspan="2" |2022
|Shin Ikki Tousen
|Shiryū Chō'un
|-
|Arknights: Prelude to Dawn
|PRTS
|-
|2024
|Brave Bang Bravern!
|Heidemarie Barrow
|}
Dubbing
{| class="wikitable sortable"
! Original year !! Dub year !! Title !! Role !! Original actor !! Notes
|-
| 1996–2000 || || Superman: The Animated Series || Talia al Ghul || Olivia Hussey ||
|-
| rowspan="2" | 2002 || || Dinosaur Island || Jackie Rodriguez || ||
|-
| || Spellbound || April DeGideo || April DeGideo ||
|-
| 2003 || || The Challenge || Kelly || Sarah Bastian ||
|-
| 2004 || || D.E.B.S. || Max Brewer || Meagan Good ||
|-
| 2004–2008 || || The Batman || Dr. Jane "Blaze" Blazedale || ||
|-
| 2005 || || Sky High || Magenta "Maj" Lewis || Kelly Vitz ||
|-
| rowspan="2" | 2006 || || All the Boys Love Mandy Lane || Mandy Lane || Amber Heard ||
|-
| || The Flying Scotsman || Katie || Morven Christie ||
|-
| 2006–2008 || || The Emperor's New School || Malina || Jessica DiCicco ||
|-
| 2007 || || Chapter 27 || Jeri || Ursula Abbott ||
|-
| 2011–2012 || || Power Rangers Samurai || Dayu || Kate Elliott ||
|-
|}