Kuwako was born, raised, and educated in Kawasaki, Japan, and graduated from the School of Language and Culture Studies, Tokyo University of Foreign Studies (TUFS), where she majored in the Czech language.
In 2015 Kuwako was assigned to Tokyo and appointed to serve as the host's "assistant" (sidekick) on NHK's much-watched Bura Tamori travelogue, a move that boosted her profile nationally.
[1][2] In 2020, Kuwako narrated the closing travelogue segment of the year's Taiga Drama, Kirin ga Kuru (English title: Awaiting Kirin), and starting hosting with Takeshi Kitano the infotainment show Takeshi no Sonotoki Camera wa Mawatte Ita (Takeshi Presents: Camera Was Rolling At That Time).
NHK announced on February 9, 2022, that Kuwako would leave NHK News Ohayō Nippon in April and begin hosting a revived version of Close-up Gendai,[3] an in-depth current affairs program.
Kuwako married Shinichi Tanioka, a Fuji Television announcer, on her 30th birthday, May 30, 2017,[4] but Sankei Sports, a tabloid, reported that the couple had divorced just a year later.