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?
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