Shiawase Yuki Kashira?

Synopsis

When Hitomi's uncle suddenly dies her father must step into the role of heir of her grandfather's hospital. Not only is Hitomi's family moving up in the world to a new home and with big prospects for the future, her campus life full of close friends is getting even sweeter when her childhood friend Hiramatsu confesses to her. Her life appears to be on rails, but when their abrasive schoolmate Ogura suddenly makes an entrance into her life, she has to ask herself if she really has a ticket to the station called happiness. Note: Volume 3 includes the one-shot Hanayome no Jouken (花嫁の条件)