Recommend me a Japanese drama/movie where college students are engaged!

Can anyone suggest dramas/movies that involve (rich/filthy rich) young couple who are engaged (contract, arranged by parents) but are in high school/college?

I remember watching a drama which involved two rich students which attended elite school who were engaged by their families (contract marriage), completely despising each other however they eventually fall in love. 

Anything that falls into this category please! :)