Reunion of Angel

Mai's having the worst day ever. She gets fired, and then two guys appear, claiming to be Angels of Death, and drop the bombshell: she'll die in seven days, with her soul completely annihilated—no reincarnation possible. The angels can't stop her death, but they want to save her soul by lending her supernatural powers to help people, just like a superhero. Can Mai perform enough good deeds in a week to alter her fate?