The promotional campaign for Ascendance of a Bookworm: Adopted Daughter of an Archduke has entered its next phase with a fresh trailer showcasing the second cour ending theme. Alongside the preview footage, production teams confirmed a notable addition to the voice cast for the ongoing fourth season, which premiered on April 4, 2026.
Voice actress Kaedo Hondo joins the ensemble as Charlotte, bringing her extensive experience to the fantasy adaptation. She works alongside a central voice cast headlined by Yuka Iguchi as Rosemyne and Sho Hayami as Ferdinand.
Production Shift and Staff
This fourth season marks a major transition for the franchise, with WIT Studio taking over animation production from Ajia-do, which handled the first three seasons. Yoshiaki Iwasaki directs the project, supported by Mariko Kunisawa as series composer and Aiko Minowa handling character designs.
The anime series adapts the intricate isekai light novel narrative written by Miya Kazuki and illustrated by You Shiina. Originally launched on Shosetsuka ni Naro in 2013, the source material concluded its physical run via TO Books with 33 volumes.
Story Arc Context
The current adaptation focuses on the third part of the overarching narrative. Publisher J-Novel Club outlines the premise of this monumental shift in the protagonist's life:
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.
J-Novel Club
