Isn't that pretty much any romantic drama? lol
One Week Friends
Date
Good Morning Call 1 and 2
Hana Yori Dango
Hotaru no Hikari
Itazura na Kiss
Last Cinderella
Strong Woman Do Bong Soon
The Liar and his Lover (Korean drama)
You can def get that kind of story-line with high school dramas (from my experience)