Lately, my childhood friend has been acting kind of strange

A yuri rom-com manga from BanG Dream! Ave Mujica, centered on Uika Misumi and Sakiko Togawa.
Uika, now going by Hatsune, finds herself flustered and tormented by her childhood friend's overly developed chest. As Sakiko is subjected to her lustful gaze from morning to night, changes begin to stir within her as well...?
A general-audience sexy rom-com depicting their life together after the anime finale.