Banish Cthulhu for a Better World

Zhou Cun came to another world inexplicably. In the world view of swords and magic, it is not easy to survive. Fortunately, there is a system as a golden finger. Later, he encountered the soul of the senior traveler and treated him as a portable grandfather, ah! It should be stable now, right? Etc! Why do some monsters look so much like K-type creatures? Depend on! Something is wrong with the system and the old man too! God, please help me, I just want to live! There is no other choice but to start by expelling Cthulhu first, live well step by step, and be the savior again by the way.