He was engaged to Ling Long but as his cultivation reached a bottle neck tried to force himself on Ling Long to use her Yin Qi to breakthrough. Ling Long refused as they were not meant to be married until after she broke through to Integration Level as losing her Yin Qi would drastically slow down her cultivation. As a result of the pressure on her, her soul split into two before she escaped to the Spirit World.
Great Ascension beast Ao Xiao, Ling Long's grandfather, takes Ling Long away when she returns to the spirit realm and cancels their engagement.
Tian Kui dies years later during the Devil Invasion.