虹色の世界に広がるおやきさんの夢、それは平和な日常生活。友達のおにぎりさんは憧れの寿司屋ではたらき、宇宙色のカラスは闇が透けた碧い空を飛び、おやきさんを見守る。足元の深い地層には冥王代からの生物たちが無生物になって重なりあい、地底の虹となる。

Oyaki’s dream in the rainbow world is a peaceful everyday life. His friend Onigirisan works at the sushi restaurant she’s always dreamed of, and a space-colored crow flies through the blue sky with darkness shining through it, watching over Oyakisan. Deep beneath his feet, living things from the Hadean Era become inanimate and overlap, forming an underground rainbow.