"Simian" is the name of a 2014 graphic novel by Vikram Balagopal. The story, based on myths and legends, begins with the old protagonist meeting his younger brother in a forest.
Who are these brothers?
[+ Show Answer]
Hanuman, the monkey (simian?) god, and Bhima, his half-brother.
Here's a review and here's the book
on Amazon and on
Flipkart.