When spectral energy levels of bright and dark modes are well aligned (Figure , Figure ), the bright mode induces strong charge separation within the dark mode domain at the 1-nm intragap (Figure ), resulting in Fano resonance with a distinct Fano dip and strong light confinement within the intragap (Figure ). The differential extinction cross-section spectrum (inset, Figure ), obtained by subtracting the nanosnowman extinction cross-section from that of the nano-Fanowman, clearly shows the characteristic asymmetric lineshape of Fano resonance. The electrostatic potential energy diagram (Figure ) demonstrates that when Fano resonance occurs, the energy surrounding the nanosnowman significantly decreases, while the intragap energy increases, indicating strong confinement of radiated energy within the intragap. Additionally, the E-field distributions of the individual nanoparticles (Figure ) visually illustrate this light energy transfer.