Boku ga CD ni Natta Wake

A boy wakes up as a compact disc, with no memory of how it happened. He searches for answers while dealing with the consequences of his new form. He also discovers he has become a ninja, which complicates his situation further. Later, he finds himself in hell, where he learns about seven mysteries that seem connected to his transformation. As he uncovers more about these mysteries, he begins to understand why he has changed and how he might return to normal. The story explores his journey through these strange circumstances and his gradual transition into adulthood.