This World Needs a Hero - Chapter 331: Side Story 5

Our protagonist was a Mexican who died on a flight, when he woke up he found Apollo who reincarnated him as the grandson of Gaius Octavian Turino (Augustus) the first Roman emperor, having a mission in hand to conquer the New World to save the Roman polytheist world and his existence.

Mason was a mercenary, until the day he died on a mission after being betrayed by his unit.

Fate, a gatekeeper who had been working for the castle, is beset by a few burdens.