We present a graviton-based reinterpretation of relativistic mass increase grounded in the Quo Vadis Effect (QVE), a framework in which gravitational interactions are mediated by finite-speed messengers, without invoking spacetime curvature or Lorentz transformations. Applied to the Bertozzi experiment, where electrons accelerated through known voltages exhibit an asymptotic velocity limit, we show that the observed behavior arises from Doppler-like modulation of gravitational signaling.In this view, the effective mass perceived by the calorimeter is not an intrinsic property, but a result of the timing and momentum of incoming gravitons. The familiar relativistic correction factor γ(v) emerges naturally as a geometric average of two distinct signal regimes: a blue-shifted approach phase, termed the "Mustard Seed Effect", and a red-shifted attenuation phase during deceleration.This mechanism reproduces the predictions of Special Relativity while offering a Newtonian interpretation rooted in finite-speed information transfer. The QVE also generalizes to other phenomena, such as Mercury’s perihelion precession and cosmic expansion, where apparent mass varies with interaction geometry and duration. These findings suggest a broader framework in which relativistic-like effects emerge from the dynamics of signal perception, bridging classical, relativistic, and potentially quantum domains.