Dirk (ディルク) is a supporting character in Ascendance of a Bookworm: Adopted Daughter of an Archduke, voiced in Japanese by Ayano Shibuya. The series' music includes "Ascendance of a Bookworm S4 - Official Opening - "pages" by Little Glee Monster", "Honzuki no Gekokujou 「Season 4 Ending」-『Ima mo, Arigatou』by Erika Ikuta".
