Hina's new high school is strange to say the least. She moves back to
her old home town only to find that the high school is run by two
opposing factors, and students identify themselves based on the color of
their school uniforms: Black for the followers of the loud, violent
Nishizaki, and white for the followers of quiet, clean-freak Isshiki.
And then there are the "grays," who wear street clothes. Hina finds
herself stuck between the leaders of the two factions, and it seems to
be turning violent.
As one might guess from the girly art and the Ribon publisher, the plot
develops a romance element pretty early on in the series. There's a love
square involved among the leaders of the groups. Who will Hina choose?
manga.wikia.com