I'm invincible at the beginning of Demon Slayer, but the system tries to kill me and I'm c

Story of: I'm invincible at the beginning of Demon Slayer, but the system tries to kill me and I'm crazyIn this new world of demon slayer, who can become the one who can dress up as a woman? Lin Chuan, a senior demon slayer enthusiast, traveled to the world of demon slayer and became a pharmacist's apprentice. With the help of the system, you get an invincible body; with the help of the pharmacist, you get the body of immortality; in the deepening of the plot, you have a good relationship with Zhu Shi, Ji Guo Yan Sheng, and they have a good relationship. It doesn't stop there. Lin Chuan started out as a medicine apprentice and gradually became a taboo figure in the world of demon slayers, and was the first human being to survive for thousands of years. As a lover of demon slayers, I, Lin Chuan, have only one wish: to dress up as a girl without misfortune! I, Lin Chuan, only have one thought: to live through a thousand years to see the gentle Tanjiro, the lovely Nezuko... to relive everything about this demon slayer!