Blue Proustian Moment

Historia

Kazuki, the daughter of a wealthy businessman, and a straight-A student at a prestigious school for girls, meets Moka, a wild girl from a rowdy school. What becomes of Kazuki when witnessing a steamy moment between Moka and her boyfriend leaves her all shaken up...?! Find out in this seaside tale of two polar opposites and their fated encounter.

Sinopsis vía AniList (en inglés).