When Kaal Bhairav was charged of Brahma Hatya, he arrived to Kashi to seek penance and it had been only during the holy land of Kashi that he was ultimately no cost in the sin on the killing. From that point on, Kaal Bhairav is alleged to reside in Kashi, https://deanigdax.onesmablog.com/considerations-to-know-about-bhairav-70262377