The Dharma

This is a Krishna graphic from Devdutt Pattanaik's version of the Mahabharata for children: The Boys who Fought.

When you can fight for the meek without hurting the mighty, you follow dharma.

The story of the grown-up Krishna is told in the Mahabharata. The story of the young Krishna is told in the Harivamsa which is 1500 years old. Even later, the Bhagavatam or Bhagavata Purana was composed, in which Krishna is described as a form of Vishnu, the caretaker of the world.

Here is a promo video from Penguin India: