Bokura no Micro na Shuumatsu

In 10 days, the world will be destroyed by a meteor. To spend his remaining time as comfortably as possible, bad-luck magnet Masumi decides to visit the library of his alma mater and read as much as he wants until the end comes. But in this hellish world, he meets a devil there: the one man from his past that he never wanted to see again, Ritsu....