She is best known for her blog I'm Queer but I'm an Office Lady (オカマだけどOLやってます。, O-kama dakedo OL yattemasu), which was published as a book by Bungeishunjū in 2006, and for multiple radio and television programs co-hosted with writer Mitsurou Kubo.
[4] At the age of two, her family moved to Ushikyu in Ibaraki Prefecture, where Nomachi attended Ushikudaiichi Junior High School [ja].
[9] In 2011, Nomachi began co-hosting the radio show Oretachi Detox with writer Mitsurou Kubo.
[10] In 2012, Nomachi and Kubo were chosen in a public vote to host the radio program All Night Nippon 0.
[14] In 2015, Nomachi appeared on a Nippon TV variety program where she was introduced as an "onee talent", a slang term for an effeminate male television personality.