The World Is Defeated, but I Become Stronger by Losing SAN

Generally speaking, there is an upper limit to a person's sanity. The higher the rationality, the stronger the ability to withstand indescribable things, and vice versa. But not so for Samuel. How much SAN value he loses will increase the upper limit of SAN value. ............ The sky that no one dares to look at, the strange creatures in ancient ruins, the weird noises in the walls... All the things that others fear are all experience packages that make him stronger in Samuel's eyes. Even if the pollution level reaches 90%, he will not stop chasing fear. Until... I was completely noticed by something...