While describing the future Kaliyuga, the future kings of that era have also been described in Purāṇa (Purana). Nitvaktra was one of the kings belonging to Candravaṁśa (Chandravamsa; the Lunar dynasty) who ruled in Kaliyuga. Uṣṇa (Ushna) is the son of king Nirvaktra. However, Viṣṇupurāṇa (Vishnupurana) mentions him as the son of king Nicakṣu (Nichakshu), also belonging to Candravaṁśa. Uṣṇa has a son called Citraratha (Chitraratha).