Travelling Worlds to Save Us (A Karna-Arjun story)

Two parallel universes: one where Karna and Arjun are sworn to kill each other, another where they grew up together as Kunti's sons. The latter get a glimpse of the former. And now Arjun is determined to save himself and his big brother in the evil world and is drawn in by a stranger wielding a flute and wearing a pea...