>>1529169
>>1529406
Also there's this, which is from a faceless OL's perspective, but I don't know the OL's age. However it can be assumed she's over 25 since she was working as an office lady at least three years prior to the story happening
https://mangadex.org/title/85eddc87-036c-4c64-8553-8557ad239e48/androgynous-chan-and-the-onee-san