Damn It, I'm Dressed as Conan

Good news: Time traveled! Bad news: It's on a kid! It would be fine if he was just a little kid, but this little kid will never grow up! Collapse! Another good news: Hey! I have a system! Here comes the bad news: the system is called the Night Lord Development System! Question: How can I become the Lord of the Night as a primary school student? System: Secure the host, this system has a body recovery card! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.