om ēkā, om prēm, om śānti

The answer to the question - what is enlightenment? - is Simple. Enlightenment is realizing that That which is, always is, i.e., that Self is One without a second. There is no division and diversity is Self perceived for Companionship, yes, Love. Synopsys. Om ēkā, Om prēm, Om śānti.
I is One, I is Love and as such I realizes Peace by recognizing One's true undivided nature which is all embracing and all loving; this true nature which is eternal, deathless and everlasting bliss.