When I Was Chased At The Beginning, I Opened Mangekyō In Seconds!

【Hokage】【Make up for regrets】【Hot-blooded】【System】【Invincible】At the beginning, he was chased by Cloud Shinobi.I Uchiha Kagami furiously opened Mangekyō!Kill the Golden Horn and save the Second Hokage! Tobirama regards me as a brother with a different surname, and Danzo and Hiruzen regard me as a close friend. I am the strongest in the Uchiha clan and the highest in Konoha, who dares to mess with me? !Mirror: "Brother, Hiruzen is indecisive and not suitable for Third Hokage. I recommend Orochimaru!" Tobirama: "Okay, I'll listen to you!"Mirror: "But Orochimaru's personality is too cold. I'm worried that the village will be in danger in the future, and someone needs to supervise him!" Tobirama: "Create the [Root] organization to supervise the current Hokage. Even if the Hokage dares to harm the village, the leader of the Root can be killed first and then punished. Who do you think is suitable?" Hiruzen: "Danzo is suitable!" Danzo: "Teacher, I can do it!" Tobirama: "No, you are not strong enough, let the mirror take over!" Danzo: "???"