: Houtarou's "man of the world" friend who acts as a "database". He often acts as the bridge between Houtarou's deductions and the social world. The Core Mysteries

: The episode uses classical pieces like Beethoven's Moonlight Sonata to set the tone, often mirroring Houtarou's shifting mental state.

Episode 1 functions as a "three-mystery" structure that demonstrates the show's focus on mundane yet captivating puzzles: Description