The story follows a high school girl who has run away from home and decides to experience survival on the streets under the guidance of a senior who is living as a 'homeless person.' The runaway high school girl, Ariune Azuki, resolves to become a homeless person instead of returning home! However, as she struggles through unforeseen trials, she receives help from her senior, Kadonashi, who possesses mysterious wisdom about life on the streets. Thus begins the survival street life experience of the two high school girls.