After getting away from her hometown - and her delinquent brother who basically ran the place - Yui is living it up at university. There, she falls for a cool, handsome (same difference!) Prince Charming in glasses who is the total opposite of her idiot brother, but unexpectedly her prince's friend is a delinquent!? On top of that, he's always getting in her way!! Just as she thinks it's all over for her, in more ways than one, she discovers that her prince in glasses lives in the apartment next door!?