Writer/Director Alex Chung cites Christopher Nolan's Memento (2000) as an obvious influence but wanted to apply the formula to a fight scene, showing the outcome first then treading backwards to reveal the set-up. Appropriately, the big reveal in the story is that the whole thing was itself a set-up.
Originally scheduled as a 2-day shoot (one day for all the dialogue and one day for the fight sequence), the crew was forced to shoot it all in just one day.