One summer break, Curt Takahashi lets a strange guy she just met stay at her place for a month for the sake of saving money. Just how cheapskate can she be?! Then there comes this childhood friend of hers who she had lost contact with for 5 years, ends up living in the same apartment building as hers. Is she really unfortunate to have met this chaotic guys when all she wanted in life was to live comfortably, or lucky 'cause for the first time she learned how to cherish something other than money