Nitrogen plays a crucial role in various fields such as chemistry, material science, and biology. However, 14N solid-state NMR spectroscopy has received limited attention due to the broad peaks typically observed from 14N nuclei, resulting from significant quadrupole interactions in their local environments. 14N overtone NMR involves direct double-quantum excitation and detection at twice the Larmor frequency in the presence of large quadrupole interactions, which helps eliminate the first-order quadrupolar broadening. Recent reports have shown the potential of 14N overtone NMR for acquiring 1D or 2D spectra on samples with smaller quadrupolar couplings. In this study, we investigated 1H inverse detection of 14N overtone NMR under ultrafast magic-angle spinning (MAS) at a spinning rate exceeding 130 kHz, focusing on the N-formyl-L-Met-L-Leu-L-Phe-OH peptide. Ultrafast MAS offered several advantages: it eliminated residual 1H linewidth, provided a strong 14N overtone radiofrequency (rf) field due to the small rotor and coil sizes, and thus improved the excitation efficiency for 14N overtone signals compared to a moderate MAS probehead. The resulting 1H-14NOT HMQC spectrum exhibited three well-resolved signals located at the +2 overtone spinning sidebands. By comparing these signals with reported 15N chemical shifts, we successfully extracted the second-order quadrupolar effect for each site.