You Are Here Early for the Apocalyptic System

Our male protagonist died inexplicably when he was 30 years old, and then he was reborn. Moreover, it was not a fantasy world, but his age was adjusted to when he was just born. The male protagonist thought that I would know all the business secrets in the next 30 years! But just after entering the first grade of junior high school, there was a system in my mind saying that the end of the world is coming. The male protagonist looked confused. At this time, the system said, Sorry host, I came too early, but the virus has been spread because of my arrival. In order to ensure your safety, you should take me with you.