Bloom Into You by Nakatani Nio — Ongoing

Also known as Eventually, I Will Become Yours

I223735

Yuu has just begun her first year in high school but has still not yet responded to a middle school graduation confession by a boy who she has always liked, but who's confession did not excite her. Yuu loves shoujo manga and she knew how confessions were supposed to feel, but she didn't feel it and she has not found a way to respond to him in months. Yuu then sees Nanami the student council president turning down a confession very thoughtfully. Yuu later discovers that Nanami has never accepted a confession because none made her feel something. Inspired by Nanami's honesty and their likemindedness, Yuu consults Nanami, but after helping her, Nanami confesses to Yuu!? - MangaUpdates

Apparently dropped by YuriProject.

Volume 1
Chapter 1: I Can't Reach the Stars released May 10 '15
Chapter 2: Fever released Jul 13 '15
Chapter 3: First Love Application released Jul 30 '15
Chapter 4: Still Within the Atmosphere released Aug 13 '15
Chapter 5: The Girl Who Loves Me released Sep 12 '15
Toranoana Extra released Jan 11 '16
Volume 1 Extras released Dec 17 '16
Volume 2
Chapter 6: A Kiss is Just a Kiss released Jan 14 '16
Chapter 7: No Actor released Feb 3 '16
Chapter 8: Multiple Choice released Feb 14 '16
Chapter 9: Multiple Choice Questions, Part Two released Feb 16 '16
Interlude: Before Daybreak released Oct 7 '15
Chapter 10: Imprisoned by a Word released Mar 3 '16
Volume 2 Extras released Dec 17 '16
Volume 3
Chapter 11: Many Secrets released Apr 30 '16
Chapter 12: Sparks released Jun 2 '16
Special: Her Sister's Perspective released Mar 29 '16
Chapter 13: Rained In released Jul 1 '16
Chapter 14: Intersection released Jul 30 '16
Chapter 15: On Your Mark released Sep 2 '16
Chapter 16: I Can't Hear the Starting Shot released Oct 2 '16
Special 3 released Nov 4 '16
Volume 3 Extras released Dec 17 '16
Volume 4
Chapter 17: I'm Incomplete released Dec 1 '16
Chapter 18: The Day Star released Dec 30 '16
Chapter 19: Mirage released Jan 30 '17