Sign in in the Marvel Universe

"Congratulations to the host who successfully signed in at the World War II Museum and obtained 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 mission entrusted by Tsunade, and obtaining the complete solution of Mudun Ninjutsu!~"This is a story of a traveler who uses the sign-in system to sign in to the heavens, step by step from an ordinary person to a superhero...