In this work, we present a new generation of zwitterionic aza-diarylethenes (Figure ). The here presented photoswitch allows fully reversible two-state photoswitching between the open isomer (global minimum) and the zwitterionic Z isomer (metastable) with two different wavelengths of light. To the best of our knowledge, this is the first example of light only driven C=N bond formation and breaking. By changing the irradiation to a third wavelength, the zwitterionic Z isomer then undergoes a double bond isomerization to the corresponding E isomer entering a third state in up to quantitative yield. This metastable E isomer is locked in solution and thermally isomerizes back to the open form only after a solvent exchange.