Madonna single dormitory, full room at the moment - a well-pretentious mother of lactating milk dormitory, an orphan warfare between Rin and Aoki Rin

Rin, who is tired of the coldness of the city after losing her job and being expelled from her boyfriend's apartment, finds a job as a dormitory where she can work inhabited. The only people living in the dormitory are those who can't help but feel at home, such as Jinshinzuka, Takino-gawa River, which has been falling into testing, and Arakawa, who is unemployed and being suspended from divorce. In such a situation, the ex-boyfriend (actually having a child) asks for Rin who struggles alone. With the feeling of loneliness in mind and blowing up explosive milk, today brightly Etchi Rin heals inside the dormitory!