Title: 付き合ってあげてもいいかな Tsukiatte Agetemo Ii kana
Creator: たみふる Tamifull
Books: 11 volumes so far, Jan '19 - ongoing, Ura Sunday Joshi-bu, Shogakukan
https://urasunday.com/title/603
Published by Viz Media in English as How Do We Relationship?
One of the longest running GL manga. It begins with Saeko and Miwa starting university, becoming friends, joining a band together, coming out each other as lesbians and trying to start a relationship. The series is largely concerned with the difficulties of making relationships work.