– Soma Saito (Hermes, Is It Wrong to Try to Pick up Girls in a Dungeon?) as William James Moriarty, an orphan adopted into the Moriarty family who goes on to become Sherlock Holmes’s greatest rival.
– Chiaki Kobayashi (Tony Freyd, Wise Man’s Grandchild) as Louis James Moriarty, William’s younger brother also adopted into the family.
Prepare to hear the legendary story of Sherlock Holmes, from his greatest enemy’s point of view!