Who Are You?

Aya is a carefree college student living alone and loving it. One day, she returns home only to be met by a stranger! The stranger, Noriko, turns out to be the neighbor's childhood friend. That neighbor is a fellow college student named Hideaki, who hates letting women into his apartment. So, when his flings want to come home with him, he pretends Aya is his girlfriend and gets rid of them. However, that won't work on Noriko... Instead, she says, "Well then, I wanna live here too!" Since Aya can't exactly kick Noriko out, their strange new life together begins...