Why did I have to fall in love with my roommate? Takasora Hoshis life is upended when her schoolmate Umi Mizuike and her mother temporarily move into her familys cramped apartment. From the outset of this arrangement, Takasora is annoyed by Umis behavior...and her good looks. Though the two girls initially agree to avoid interfering in each others lives, Takasora cant help but start to wonder where Umi keeps wandering off to at night...From the author of Adachi and Shimamura comes the bittersweet tale of two high school girls whose lives are pushed together under the same roof.