After their parents divorced, mother remarried, and father ranaway, the remaining two members of Ikeuchi family -- college student Masaki and his younger sister, elementary schooler Minami -- along with Masaki's roommate and best friend Kanda, barely support themselves under the same roof.<br /><br />While the difficult yet happy life seemed to continue forever, all hell broke loose when Masaki one day returned home from his part-time job earlier than Minami expected.<br /><br />Minami, a precocious 9-10 year old girl who has a crush on a much older male and yearning for some affection.