I don't get why it is the default assumption that the mural depicts the first and second world. We are told they are scribbles by children from 800 to 900 years ago. Children, not historians or archaelogists. They would draw about their own time.
While Joyboy is fighting the huge demon, Imu is coming from behind. Joyboy didn't lose because he was too weak, he lost because the human kings betrayed him. There are 19 besides Imu, the ones carrying the stars.

While Joyboy is fighting the huge demon, Imu is coming from behind. Joyboy didn't lose because he was too weak, he lost because the human kings betrayed him. There are 19 besides Imu, the ones carrying the stars.