Akasaki graduated from the Kagoshima Prefectural Jinjiang Bay High School and Tokyo Gakugei University. At the university she studied Italian as a second foreign language. She has received a Nippon Cultural Broadcasting Award, 81 Produce Award and Alchemist Award on Voice Newtype Summer Audition 2008. From October 2008, she went to 81 Actor's Studio as an award privilege of 81 Produce Award. She graduated from training school in October 2009, became a member of 81 Produce in April 2010.
She aspired to be a voice actor in her fifth and sixth grade. In junior high school, she belonged to the basketball club and the broadcasting club, and has a career in the Kagoshima Prefecture tournament. At Jinjiang Bay High School, she belonged to the local civic troupe "Ibuki" because there was no club drama in high school.
Her family has a two-year-old sister.
On 10 August 2018 (her 31st birthday), she officially announced her marriage on her Twitter account.
- Shimajirō HESOKA – Nacchi
- Shimajirō HESOKA – Ms. Shikako
- Sacred Seven – Nanami Akasaki
- Wandering Son – Tsuchiya
- Mashiroiro Symphony – Itsuki Asakura
- Kill Me Baby – Yasuna Oribe
- Smile PreCure! – Haru Midorikawa, Runa Terada
- Senki Zesshō Symphogear – Yumi Itaba
- High School DxD – Ile and Nel
- Bodacious Space Pirates – Maki Harada
- Lagrange: The Flower of Rin-ne – Kokoro Sagishima, Chiharu Arisato, Yuria Sogabe, Nami Senjō
- Love, Chunibyo & Other Delusions – Shinka Nibutani
- Oreshura – Chiwa Harusaki
- A Certain Scientific Railgun S – Saiai Kinuhata
- Love Lab – Natsuo Maki
- Fantasista Doll – Shimeji
- Pocket Monsters: XY – Joy, Satoshi's Numera/Numeil, Citron's Horubee
- Gingitsune – Yumi Ikegami
- Love, Chunibyo & Other Delusions -Heart Throb- – Shinka Nibutani
- Selector Infected WIXOSS – Akira Aoi
- Himegoto – Kaguya Arikawa
- Gonna be the Twin-Tail!! – Erina Shindō
- PriPara – Falulu, Chanko
- Trinity Seven – Ilia
- Food Wars: Shokugeki no Soma – Alice Nakiri
- Is It Wrong to Try to Pick Up Girls in a Dungeon? – Yamato Mikoto
- Chivalry of a Failed Knight - Tsukuyomi Sisters
- Plastic Memories – Michiru Kinushima
- Pocket Monsters: XY&Z – Joy, Citron's Horubee
- Saekano: How to Raise a Boring Girlfriend – Izumi Hashima
- The Idolmaster Cinderella Girls – Akane Hino
- The Asterisk War – Ernesta Kuhne
- Utawarerumono: The False Faces – Anju
- Boku Dake ga Inai Machi – Airi Katagiri
- Food Wars! Shokugeki no Soma: The Second Plate – Alice Nakiri
- Hybrid x Heart Magias Academy Ataraxia – Yuricia Farandole
- Re:Zero − Starting Life in Another World – Felt
- Fate/Apocrypha – Fiore Forvedge Yggdmillennia
- In Another World With My Smartphone – Yae Kokonoe
- Welcome to the Ballroom — Chinatsu Hiyama
- Dagashi Kashi 2 – Hajime Owari
- Killing Bites – Mai Shinozaki
- Sword Art Online Alternative Gun Gale Online – Fukaziroh
- My Sister, My Writer – Ahegao W Peace Sensei
- Joshi Kōsei no Mudazukai – Nozomu Tanaka
Original video animation (OVA)
- Takanashi Rikka Kai: Gekijō-ban Chūnibyō Demo Koi ga Shitai! (2013) as Nibutani, Shinka
- PriPara Mi~nna no Akogare Let's Go PriPari (2016) as Falulu, Chanko
- Accel World: Infinite Burst (2016) as Risa Tsukiori
- Love, Chunibyo & Other Delusions! Take on Me (2018) as Nibutani, Shinka
- Saenai Heroine no Sodatekata. Fine (2019) as Izumi Hashima
- Genso Suikoden: Tsumugareshi Hyakunen no Toki – Efil, Nima
- When Cicadas Cry Bonds: Kizuna – Lune-Oak
- Girl Friend Beta – Akari Amari
- JoJo's Bizarre Adventure: Eyes of Heaven (2015) – Yukako Yamagishi
- Utawarerumono: Itsuwari no Kamen (2015) – Anju
- Sword Art Online: Lost Song (2015) – Lux
- MeiQ: Labyrinth of Death (2015) – Sethia
- Kantai Collection (2016) – Zara, Pola, and Aquila
- Utawarerumono: Futari no Hakuoro (2016) – Anju
- Soulcalibur VI (2018) – Seong Mi-na
- Takeshi Washizaki (13 September 2008). "鷲崎 健の超ラジ！ 新人（？）". Nippon Cultural Broadcasting. Retrieved 18 March 2012.
- "聲優の赤崎千夏が結婚報告 アニメ『ハイスコアガール』『中二病でも恋がしたい!』など". ORICON NEWS. 2018-08-10. Retrieved 2018-08-10.
- "Steins;Gate's Satō, anohana's Okada Make selector infected WIXOSS Anime". Anime News Network. 27 January 2014. Retrieved 27 January 2014.
- "Hybrid x Heart Magias Academy Ataraxia TV Anime's Promo Video Reveals Cast, Staff". Anime News Network. Retrieved April 1, 2016.
- "Accel World Film Reveals New Character Played by Chinatsu Akasaki, Visual". Anime News Network. Retrieved June 9, 2016.
- "Junko's Watashi ga Motete Dousunda Manga Gets Drama CD". Anime News Network. September 8, 2014. Retrieved January 22, 2015.
- "幻想水滸伝 紡がれし百年の時 キャラクター". Genso Suikoden: Tsumugareshi Hyakunen no Toki. Konami. Retrieved 18 March 2012.
- Romano, Sal (21 April 2015). "Lux and Seven playable in Sword Art Online: Lost Song via upcoming update". Gematsu. Retrieved 21 April 2016.
- "SOULCALIBUR VI (ソウルキャリバー 6) | バンダイナムコエンターテインメント公式サイト". sc6.soularchive.jp (in Japanese). Retrieved 2018-08-07.
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