Onna Tomodachi To Kekkon Shitemita
Summary
Two women who are just friends make a pact... "If both of us are still single in 5 years, let's get married." Five years later, they meet again, and their married life begins.
Serialised in Yuri Hime starting in November 2020.
https://www.animenewsnetwork.com/news/2020-10-17/donuts-under-a-crescent-moon-shio-usui-launches-new-manga-in-november/.165322