Hayashi Ari and her mother Akiko, are forced to move to the country with their relative due to financial hardships. Unbeknownst to them, a foreign exchange student, Naomi Fischer, is also living with her aunt until Naomi is done with her schooling in Japan. In this one bedroom apartment with an awkward living situation, Ari comes to discover the hidden truths of this quiet and enigmatic girl who suddenly became her new roommate.