Saika no Kami wa Negawanai

In ancient Egypt, where deities govern, Set, the god of war, resents his elder brother Osiris, the ruler who envisions a peaceful world. At Osiris' request, the two brothers leave the palace together. When Set momentarily loses sight of Osiris, his brother is killed. Set is blamed for the murder and sentenced to execution. However, he awakens in his chamber to find Osiris standing before him, seemingly alive despite having been slain.