Kevin Lynch is humiliated and ordered out of his family's home for being an F-rank pilot. When A-rank Mecha Maiden Claire Lawson refuses to bond with him, Kevin activates a Divine Modification System. Triggered by his resentment, the system promises to make any Mecha Maiden legendary with 100% loyalty. It scans Claire and offers three extreme upgrades: Oblivion Beam Array, Void Warp Engine, and Quantum Devour, each granting massive new power. Kevin decides to use the system to create the world's strongest Mecha Maiden despite his rank, but which modification he will pick and the consequences remain unresolved.