Harumagedon

The year is 2002, and the world did not end in 1999 as Nostradamus predicted. However, the lord of doom, Harumagedon, has been on Earth since then, keeping a countdown for the end of humanity. He operates a point-based system, deducting points for humanity's wrongdoings and awarding them for good behavior, with the values determined solely by his own judgment. When humanity reaches zero points, Earth will be destroyed.

Nineteen months have passed since Harumagedon's arrival, and the only reason humanity still exists is a girl named Noa. Her pure goodness touches Harumagedon's heart every time the points are about to hit zero, saving Earth at the last moment. As the countdown continues, the fate of the world hangs in the balance, with Noa unwittingly becoming humanity's last hope against the whims of a capricious god of doom.