Drona (Amar Chitra Katha) Vol. 565

When Drona went to his childhood friend, Drupada, to remind him of his promise of eternal friendship made long ago, Drupada rebuked him and spurned him. Burning with anger and humiliation, Drona was filled with a desire for revenge. That was the only tragic flaw in a brave and supremely talented archer who taught the use of arms to the Kaurava and the Pandava princes.