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How can a man with invincible defense be able to keep a low profile?

[Doomsday+System+Summoning+Pseudo-Invincible] The protagonist travels to this huge doomsday planet. The land area is only 1% of the planet's area. Zombies, ghosts, and monsters coexist on this planet; there are also the legends of the mysterious mermaid tribe and fish-men tribe. Humanity is struggling hard on the edge of doomsday.

What's the point of having a sign-in system and many subsystems? The person who owns the system is called a spokesperson? Am I not the only one with the system? What? People with supernatural powers are called executors? What? Do you think I'm just the recycling system owner? Sorry, I have a sign-in system, a recycling system, an experience system, a spending system, etc. The recycling system is just my ID to travel around the world. What? You ask me where is the heroine? Let's wait until the author is single. Everyone, please be objective~