For all those who want to read it cause it looks like a romance manga, I will have to correct you. True there is some romance. But it is mostly about the male lead, who is a Yankee connecting with his classmates and finding the joys of school, through the female lead who is an airhead, and super strong ex delinquent who wants to lead a normal school life. The other characters also have depth. I would call it more of a funny slice of life. I would recommend you try it out.
Warning: I would have given it a 10, but the ending dissatisfied me.