Akame Ga Kill: Forsaken Allegiances

We know the story. Tatsumi gets rejected from joining the Imperial Forces and after witnessing the death of his closest friends and the ugly truth and corruption of the Empire is revealed Tatsumi joins NightRaid for vengeance and justice. But what if that didn't happen? What if Tatsumi after some twists and turns gets accepted into Imperial Forces prior to finding out the truth?