Onna Tomodachi to Kekkon ShitemitaMarry A Girl Friend.; Trying Out Marriage With My Female Friend; 女ともだちと結婚してみた。; 尝试与女性朋友结婚了; 嘗試與女性朋友結婚了; Chángshì yǔ nǚxìng péngyǒu jiéhūnle; 和女性朋友結婚了。; I Married My Female Friend; Jak poślubić przyjaciółkę; คุณเพื่อนคะลองมาแต่งงานกันมั้ย
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