Ryuk frames the narrative in *Death Note Relight: Visions of a God*, recounting Light Yagami's rise and fall to an unnamed Shinigami in exchange for an apple. This role positions him as an observer reflecting on Light’s actions, explicitly stating Light was not yet "a god" during these events but something else. His concluding remark—"Wouldn't you agree… Light?"—implies lingering fascination with Light's legacy. Chronic boredom in the Shinigami Realm drove Ryuk to steal a second Death Note and drop it into the human world. His final design, diverging from initial concepts resembling Light, features gray-blue skin, elongated limbs, tattered wings, and yellow eyes with red irises, emphasizing non-human traits to avoid overshadowing Light. His personality centers on seeking amusement, showing apathy toward human morality. He adheres strictly to Shinigami rules, aiding Light only to alleviate boredom or secure apples—a human-world addiction he compares to human vices. Ryuk maintains consistent traits across all media: addiction to apples, enjoyment of video games like Mario Golf, and discomfort around human women, such as avoiding Misa Amane's touch. He reveals Death Note rules selectively, often at critical moments to provoke chaos. His neutrality is absolute; he withholds pivotal information from Light and denies assistance during confrontations. In the manga's climax, Ryuk kills Light after his defeat, writing his name as Light begs for help instead of the investigators'. The anime adaptation alters this: Light escapes the warehouse but collapses from injuries, prompting Ryuk to kill him to avoid waiting through a prison sentence. Post-series manga chapters show Ryuk enabling new humans, like Minoru Tanaka, to use the Death Note for financial schemes, though the Shinigami King later forbids such transactions. In the musical, Ryuk interacts with fellow Shinigami Rem, mocking humanity while acknowledging their entertainment value. Songs like "They're Only Human" underscore his voyeuristic role. Live-action films depict him offering the Death Note to L after Light's death, and the spin-off *L: Change the WorLd* shows him tempting L to use the notebook before its destruction. The *Death Note: New Generation* miniseries briefly features him delivering a notebook to a new Kira adherent. *Relight* establishes Ryuk's storytelling role, but his core remains unchanged: a passive catalyst whose actions stem solely from ennui, never allegiance. His final words in *Relight*—encouraging the unnamed Shinigami to drop a notebook—reiterate his eternal pursuit of distraction through human turmoil.