I, the Skeleton of the Underworld, Sign in to Become a Natural Disaster of the Undead

Gu Bin traveled to the world of swords and magic and was reborn as a little skeleton soldier in the underworld. When he was desperate, he found that he was bound to a sign-in system. Sign in at the Dragon Bone Mountains and get the Dark Dragon Bone Demonic Sword as a reward. Sign in at the Hell Blood Pool and get the Overlord's Egg as a reward Sign in at the Il Underground Palace and receive the reward Soul Kingdom. Sign in at Hades' Castle and receive the Immortal Throne as a reward. When the two realms of gods and demons fought, intending to annex the underworld, they found that the underworld had already been unified. And the one sitting on the throne turned out to be an absurdly powerful skeleton. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.