Wangji : Sacrifice Volume 1

The King of the Gods has issued an open challenge to all mortals and demi-gods - all that dare to face him in a duel on a remote icy planet, in an arena especially made for this duel, which is broadcasted live for all to see. Two demi-gods are the first to try this challenge, Wangji and Daichi! With Daichi arriving first to the arena, Wangji hurries to see his father so that he too may enter this challenge before his brother steals all of the glory!

All of the above mentioned plot-points (and more) are covered in the 5-minute animation "Wangji: Sacrifice The Beginning", a prequel to Volume 1, available on Youtube!