"Congratulations to the host for successfully signing in at the World War II Museum and receiving the perfect version of the T virus serum..."
"Congratulations to the host for successfully signing in at the New York Temple and obtaining the foundation of space magic..."
"Congratulations to the host for completing the task entrusted by Tsunade and obtaining the complete solution to the Wood Release Ninjutsu!~"
This is the story of a time traveler who relies on the sign-in system to sign in to the heavens, step by step from an ordinary person to a superhero...
