After death and before reincarnation, the souls of the deceased pass through a fantastical realm known as, Another World. GUDO is a spirit tasked with guiding these transient souls to their next life.
While helping a young girl named YURI, he learns that humans have emotions that he does not understand, and his curiosity is stirred. He befriends Yuri and promises to always be with her through her difficult journey.
However, Yuri harbors a rare curse that could threaten humanity and upset the balance of the universe if she is fully consumed by anger. Through Gudo’s revelation, Yuri discovers a grave sin she committed in her past life. Unable to forgive herself, her growing anger risks unleashing the hidden curse. Charged by Goddess Mira to prevent this threat, Gudo embarks on a perilous thousand-year mission.
Despite constant conflicts with his guardian, Dark Sky, Gudo insists on giving Yuri a second chance at the risk of his life. He learns that forgiveness and inner peace is the only way to overcome the anger within and heal a broken world.