Unlike standard in-game databases or character profiles, the BALDR SKY Secret Files refer to two distinct but related concepts:

For the purpose of this article, we will focus primarily on the in-game secret files, as accessing 100% of them is the true mark of mastering BALDR SKY.

The combat doctrine of the BALDR universe relies on the Coupling System—the ability of a Simulacrum to equip and cycle through vast libraries of weaponry instantaneously.

The narrative structure implies that the protagonist is trapped within a cyclical simulation. The "Secret Files" represent memory leakage from previous iterations.