Yamasato is a member of the 22nd graduating class of Yoshimoto Kogyo's New Star Creation school of comedy in Osaka.

The Nankai Candies took second place in the 2004 M-1 Grand Prix,[2] leading to many television appearances and subsequently moved their base from Osaka to Tokyo.

explains recent political and economic words in an easy-to-understand manner, while Yamasato Ryōta no 'Tarinai' Eigo teaches simple English for communication.

[10] Since October 2016, Yamasato and his fellow Terrace House commentator You have co-hosted the puppet show Nehorin Pahorin on NHK Educational TV.

The anonymity afforded via the puppets and voice modulation allows the guests to talk candidly about topics not usually covered on mainstream TV, such as idol otaku or host club addiction.

[16][17] The two first met through Shizuyo Yamasaki, who co-starred with Aoi in the film Hula Girls (2006), and began dating in April 2019.

[17] In episode six of Terrace House: Tokyo 2019–2020, Yamasato credited his job on the show for the marriage, as Aoi is a fan and wanted to talk to him about it.