Slay the Gods: Cthulhu Runs Rampant, and the Gods Are as Good as Dead

I was transmigrated by Mom after school on my way home. In the world of Slay the Gods, I saw Cthulhu hidden in the inner world. What should I do? Time to put on the performance of a lifetime. I’ll hypnotize myself into thinking I can’t see it. A blockbuster featuring a masked ghost? Pretty entertaining, actually. What do you mean, you’re the Ghost-Faced King? Miss Mary, it’s your turn to act. I’m so eager to improve. With an immortality skill, I’m invincible. I can’t die, really, I can’t die. I’m only asking for death. How dare you false gods, with the power of low-tier Primordial Chaos, call yourselves deities? Let me show you what a true god is. [Host activates dimensional reduction skill] The true Cthulhu runs rampant. I am the Lord of Cthulhu!