At age sixteen, Odagiri Yume was thought to be unlucky, lacking motivation, and worthless. However, she defied these labels by saving Momo, a high-class, charming girl who claimed to be the Devil. In return, Momo granted Yume's wish to become special, rendering her the official representative of the earth. But Yume's new role came with a daunting task: she must provide Momo with seven solid reasons why the world should not be destroyed before her eighteenth birthday. With the countdown to destruction ticking away, only Momo possesses the power to prevent it. This manga also features additional one-shots, such as "Kimi no Sekai no Sukuikata" in Volume 1 and "17 O'Clocks" in Volume 7.
