Short Sunzen!
From Tokyopop:
Meet Satsuki, a rather rough and tumble girl who acts more like a yakuza member than a sweet young lady! She's too busy teaching people lessons to see that her handsome and cool classmate, Aya, secretly pines for her. Unfortunately, she just wants to be friends -- ouch! But as they spend more time together, their relationship builds and strengthens. Will they ever be more than friends?! Find out in this sweet and sexy romance!