This concept note reframes the hypothetical graviton as the quantized footprint of shadow-mass rebalancing in the Quantum Tachyonic Gravity (QTG). Rather than positing a separate exchange particle, QTG treats gravity as the macroscopic curvature that emerges when baryonic asymmetries couple to their superluminal shadow componets across the C-boundary. This minimal unit of that cross-boundary curvature adjustment is what standard quantum field theory would interpret as a graviton. We outline the formal mapping, a simple mathematical sketch, phenomenological expectations, and possible experimental signatures.