When Kaal Bhairav was billed of Brahma Hatya, he arrived to Kashi to hunt penance and it was only in the holy land of Kashi that he was lastly totally free in the sin of the killing. From that time on, Kaal Bhairav is claimed to reside in Kashi, under https://fernandoyulbq.activablog.com/29564314/the-2-minute-rule-for-bhairav