Vesper is a secret agency fighting an army of alien invaders by using super-powerful battle androids. Mahoro is Vesper's most powerful battle android and has won many battles, but she has little operating time left and soon will cease to function. However, if she lays down her arms and conserves her remaining power, the time she has left can be prolonged to just over a year. Mahoro is given an opportunity to live the remaining time she has as a normal human. She chooses to live as a maid for Suguru, a phenomenally messy middle school student who lives by himself after his family passed away. (Source: ANN)

As the relationship between Mahoro, Suguru and his classmates develops further, another android girl enters their lives and becomes attached to Mahoro. All the while, the number of days before Mahoro is to shut down decreases steadily. (Source: ANN)

Yuzuka Hanami is a young, carefree girl who lives the most ordinary life imaginable. Although her father works around the clock and her mother is rarely home, she still enjoys herself and strives to be an excellent student. Miton, on the other hand, is an alien life-form with the ability to transform his master into a magical girl, a warrior who fights evil wherever it may appear. However, there are not as many enemies as there used to be, so Miton has been out of work for a while. Starving and homeless, he has taken up residence in a pile of garbage. As Yuzuka walks past him one day, Miton seizes the opportunity to offer his services to the young girl. Yuzuka reluctantly agrees, but when she transforms into a magical girl and discovers that her outfit is a swimsuit, she begins to have second thoughts about what she has gotten herself into! [Written by MAL Rewrite]

Second season of Mahou Shoujo Nante Mou Ii Desukara.