Death Note

Death Note is the small-canon exemplar of this vertical: thirty-seven episodes, one of the tightest sealed canons in the medium, and evergreen demand that never cycles down. There is no filler to hide behind here, so every quiz is built from craft: the Kira investigation chronology step by step, the rules of the Death Note exactly as the work itself states them, the records of the task force and its successors, and the Yotsuba and successor arcs tested at the depth the fandom expects. The full series is fair game on this shelf and the scope line says so plainly. If you are still watching, the front-door quizzes stay premise-level; the deep dives wait until you have closed the notebook.