When the courier accidentally enters Cthulhu's lair in the shadow of the city, he activates the sign-in system when he is about to die - he will become stronger by killing the indescribable! Others are afraid of going crazy when practicing martial arts, but he can repeatedly jump on the edge of madness: the lower the san value, the more explosive the combat power will be, and the system can be purified with one click after beating.
From then on, he delivered express delivery during the day and killed evil gods at night, from the sewers to the Antarctic ice cap, until the Old Ones trembled under his fist: "Who is the monster?"
