I could have done an entire month's worth of reviews just of yuri manga just from 2021 - that's how popular the genre has become. I've got room for just one more this year, so let's make it a good one.
A WHITE ROSE IN BLOOM (Meijirobana no Saku), by Asumiko Nakamura. First published in 2017 and first published in North America in 2021.
PLOT:
Ruby is a lively high school at an elite European private school, one who gets caught up in the mess of her parents' failing marriage and ends up stuck at school over Christmas break. It's during that time that she's forced to interact with Stephanie Nagy, a frosty but beautiful senior girl. Their relationship becomes the talk of the school, much to the displeasure of them both. Yet whe Ruby needs to pass a scholarship test to stay at the school, Stephanie is the only person she can turn to.