I Kill Monsters in a Strange World

Song Yao traveled through time to obtain a bonus system, but learned that his meridians were cut off and he could not practice. After thinking about it for a long time, he just wanted to be a small bookkeeper and live in peace for the rest of his life. However, he accidentally broke into a strange and haunted house and had a grudge with the monster. From then on, the word "Demon Demon" penetrated the main artery of his life. —— "You say this is a demon?" Song Yao pointed at a monster with a bloated body, a huge mouth on its abdomen, white bones exposed on its broken arms, and countless tentacles squirming on its head and said slowly. "You think this is also a demon?" Song Yao pointed to an ancient tree that was rotten and oozing with pus. Its branches were covered with human hands, and each hand held a snow-white skull and said again. "Do you think this is still a demon?" Song Yao pointed at a powerful man who came from the sky, had a golden wheel on his back, had long and dry limbs, and could create a small-mass black hole with his bare hands. "It's a demon! Look at the sword!" This time Song Yao resolutely drew his sword and used the strongest demon-killing sword technique! The old man with white hair and grimace in front of him fell to his knees and foamed at the mouth. "Disciple, I am your master!"