Naruto: Reported At The Beginning

Konoha, Year 32. Ninja Academy
Looking at the rice ball offered by Minato, whose smile was as warm as the sun, Akira who had traveled from Earth, took a big bite. Thinking about Minato's eventual fate, he secretly resolved in his heart, "To change the ninja world, I'll start by saving the Fourth Hokage, Namikaze Minato."
However... before Akira could save the future Fourth Hokage, on the very first day after his arrival, Minato turned him in. With a swift move, he reported Akira, getting him sent straight to the Konoha Anbu's interrogation room reserved for spies.
Akira : "..."
Alright then, the main mission has changed. The plan to destroy Konoha is now my top priority.