The Instrumentalist Blues Arc is the fourth character arc in the series and is the shortest one thus far. The events of it take place sometime after the Ten Minute Flash-Mob Arc but the exact placement on the timeline is unknown. Was bundled along with the First Special Edition Sale of the series.
- Tyler can be seen in a room seemingly talking to himself where he then kneels down and refers to The Witch as his master. This arc revealed his ability Amnesia, which is why no one questioned his disappearance during the events of two different arcs. After this arc, Tyler's status was shifted to secondary antagonist.