Sign in for Ten Years and Then Become Invincible

After traveling to a different world and becoming a good-for-nothing male protagonist, Lin Mo thought he would spend his whole life doing nothing, but he was bound to a sign-in system, and there was a chance of getting rewards for signing in anywhere. Sign in at the Library Pavilion and obtain the Beiming Magic! Sign in at the Cave of the Dead and get the dragon-slaying sword! Sign in at the harem and get the Nine-turn Resurrection Pill! … In this way, ten years later, Lin Mo adhered to the principle of obscene development and refused to go out if he was not strong enough. Until one day ten years later, the demons invaded. The strong men of the human race went out in full force, but they were slaughtered by the invincible Demon Lord and faced the disaster of annihilation. Just when all sentient beings were in despair, in a small town in the Izumo Empire, powerful fighting spirit surged into the sky, and the sky and the earth were eclipsed!