KINIRO MOSAIC (Kin-iro Mozaiku), by Yui Hara. First published in 2010 and first published in North America in 2016.
PLOT:
Alice Cartelet is an English girl who loves Japan so much that she decides to move there to attend high school. There she is reunited with her old friend Shinobu, who stayed with Alice's family while studying abroad and who is equally fanatical about all things European. Together with their friends, Aya, Youko, and Karen they struggle with cross-cultural misunderstandings along with all the usual pleasantries of high school.