Seven new voice cast members have been announced for the upcoming Ascendance of a Bookworm: Adopted Daughter of an Archduke TV anime series. The anime’s fourth season will begin broadcasting in Japan on April 4, 2026.
The latest cast member additions include:
- • Yukari Tamura as Georgine
- • Mami Koyama as Veronica
- • Minami Takayama as Florencia
- • Kazuhiro Yamaji as Bonifatius
- • Nao Toyama as Angelica
- • Asami Seto as Brigitte
- • Katsumi Fukuhara as Zack
They join a returning voice cast that stars Yuka Iguchi as Rozemyne and Sho Hayami as Ferdinand.
Yoshiaki Iwasaki (Kowloon Generic Romance) is directing the fourth season, with Mariko Kunisawa (The Dinner Table Detective) as series composer, and Aiko Minowa as character designer. WIT STUDIO is in charge of the animation production, taking over from Ajia-do, who produced the past three seasons.
The anime’s first season debuted in 2019 and was followed by a second season in 2020 and a third season in 2022. Crunchyroll streamed the anime’s three seasons in select countries and territories worldwide.
Ascendance of a Bookworm: Adopted Daughter of an Archduke adapts the third part of the fantasy light novel series, written by Miya Kazuki and illustrated by You Shiina. It was first published by TO Books on January 25, 2015 and concluded on December 9, 2023. A total of 33 volumes were published in Japan.
The light novels also inspired several spin-off titles, short story collections, and manga adaptations of its numerous story parts, which have been released in English by J-Novel Club. The series was first serialized as a web novel on Shosetsuka ni Naro in 2013.
© 香月美夜・TOブックス／本好きの下剋上製作委員会２０２６
J-Novel Club licensed the light novel series for English print and digital release. It describes the main synopsis of the first Adopted Daughter of an Archduke volume as:
Following a disastrous encounter with a noble, Myne finally resolves to say goodbye to her family and friends in the lower city, changing her name to Rozemyne and beginning her new life as the adopted daughter of Ehrenfest’s archduke. However, her days as an archnoble in noble society are brutal, as she is put through rigorous etiquette and magic training on top of her duties as High Bishop and forewoman. It all proves too much for a weak little seven-year-old girl… Or it would have, had the High Priest not offered her the keys to the temple’s book room as a reward. If she could get her hands on those, she’d be able to read all sorts of precious books! Her name may have changed, but Rozemyne’s passion for books remains the same as she charges into a whole new world!
Sources: Ascendance of a Bookworm Official Twitter, Official Anime Website, Anime News Network
