Well, to know if Kala is a real story, we need to look at the source and the evidence presented. If it's well-documented and verified, it might be real. But if there are inconsistencies or no reliable sources, it could be more fictional than real.
One great Thane Krios fanfiction is 'The Redemption of Thane'. It delves deep into his past and his struggle with his beliefs. The story is well - written, with vivid descriptions of his inner turmoil. Another good one is 'Thane's New Path' which shows an alternate future for him. It's interesting to see how the author imagines his life could have been different.
Daya is also quite memorable. Her simple yet strong personality, especially when she scolds Jethalal in her own unique style, is always entertaining. And her love for her family is evident in every episode.
The 'kala pani' refers to the Cellular Jail in the Andaman and Nicobar Islands in India. The real story is about the British using it as a prison during their colonial rule. Many Indian freedom fighters were sent there. It was a place of great suffering and torture. The inmates had to endure harsh living conditions, forced labor, and brutal treatment by the jail authorities.
Since I don't know the exact 'Kala Brown story', it's difficult to tell. Maybe she is an ordinary person with her own unique experiences in a certain community, or she could be known in a particular field like art or sports, but without more details, it's impossible to accurately relate her story.