Yō Taichi is a Japanese voice actress born on August 6, 1994, in Saitama Prefecture. She is affiliated with the talent agency VIMS. Her interest in anime began in elementary school, and she realized voice acting was a distinct profession during her middle school years after discovering that voice actors performed character songs. Taichi trained at the Japan Narration Acting Institute before entering the industry.

Taichi's first major role and breakthrough came in 2016 when she was cast as Kenya Kobayashi in the acclaimed television anime series Erased. This performance helped establish her in the industry. In 2017, she gained further prominence with her role as Dorothy in the series Princess Principal, a pivotal supporting lead that showcased her versatility in portraying a composed spy with emotional depth. Her profile was significantly elevated with her portrayal of Hiro Soma in the 2019-2021 Fruits Basket reboot, where she voiced the sharp-tongued youngest member of the cursed Soma family.

Taichi has demonstrated a wide vocal range, effectively handling roles such as young boys like Hiro Soma, cool and composed females like Dorothy, and beastly characters such as Guideau in The Witch and the Beast. She ranked fifth in a 2016 poll for busiest voice actresses, highlighting her rapid ascent and high volume of work early in her career.

Her extensive filmography includes a diverse array of roles across many series. Among her notable television anime roles are Akane Sawatari in Chainsaw Man, Takeo Kamado in Demon Slayer: Kimetsu no Yaiba, Suphia in That Time I Got Reincarnated as a Slime, Akane Ryuzoji in World's End Harem, Michiru Isumi in Muv-Luv Alternative, Subaru in Gleipnir, Kaoru Hoshino in Kageki Shojo!!, Oniyuri in In the Heart of Kunoichi Tsubaki, Mafuneko in On Air Dekinai!, Tokishikko Dana in Immoral Guild, Yuriko Suemune in Extreme Hearts, Tsugiko in Phantom of the Idol, Albus in The Dawn of the Witch, Haruka Sokawa in Cardfight!! Vanguard overDress and will+Dress, Akane Kono in Play It Cool, Guys, Samon Katori and Mandara Samuragōchi in Shinobi no Ittoki, and Naomi in Ninjala.

Taichi has also had significant recurring roles in long-running and popular franchises. She voiced Ayanami and Rodney in the Azur Lane anime and its spin-off Azur Lane: Slow Ahead!. She appeared as Hideko Yamashita in High School Fleet, Maxine Silverstone in Double Decker! Doug & Kirill, Madoka Kushitori in Chio's School Road, and Sunao Sumeragi in the Tsugumomo series. Her film work includes roles in Her Blue Sky as Masatsugu Nakamura, Black Fox as Melissa, Blue Thermal as Ayako Maki, and the ongoing Princess Principal: Crown Handler film series.

Beyond anime, Taichi has an extensive presence in video games. Some of her notable game roles include Ayanami and Rodney in Azur Lane, Deepcolor and Scavenger in Arknights, the female protagonist in The Caligula Effect 2, Hephaestion in Fate/Grand Order, Setsuka in Soulcalibur VI, and Nidhana in Final Fantasy XIV. She is also active in dubbing foreign films and series, providing Japanese voices for characters in productions such as West Side Story, Bad Boys for Life, Freaky, and Gen V.

Taichi has contributed numerous character songs throughout her career, often performing as the characters she voices in anime and games. These include tracks for Tsugumomo, Princess Principal, and Azur Lane. She has been a member of several seiyuu idol units related to her anime projects, including Sweet Pharmacy for Phantom of the Idol, a unit for In the Heart of Kunoichi Tsubaki, CASQUETTE'S for the Tokyo 7th Sisters franchise, and May-Bee for Extreme Hearts. She has performed theme songs and insert songs for series such as Kageki Shojo!!, A Salad Bowl of Eccentrics, and Himitsu no AiPri.