Worst Protagonist Group

[Group Growth] + [Time Travel] + [Science Fiction Suspense] + [Emotional Redemption] Hidden in my grandfather's belongings is the truth of a mystery that spans 63 years. In order to return to the future, they must become history. To prove innocence, they must commit a crime. Several people from different time and space formed the "worst protagonist group" and accidentally revealed the secret of the fire. And all redemptions that travel through time and space will eventually lead to a closed loop of self-judgment. Now, it's my turn to turn the last page. In my grandfather's story, I will reveal the true culprit of this crime.