In the website official for adaptation to Anime From the light novel Ascendance of a Bookworm (d)Honzuki no Gekokujou) It was announced that the fourth season of the series will premiere in Japan during the spring season of 2026. In addition, a new promotional video and visual image for the new installment of the series has also been shared.
Ascendance of a Bookworm Season 4 will arrive in spring 2026

It should be noted that both the promotional video and the visual image for the fourth season of the series, entitled Ascendance of a bookworm: adopted daughter of an archduke, have been presented at the event Anime Expo 2025. However, the official media of the anime have shared them a few hours ago.
The new installment of the anime has the following production equipment
The animation studio Wit Studio It is in charge of the production of the animation. Yoshiaki Iwasaki is in charge of the address. Mariko Kunisawa He is in charge of the composition. The character designs will be in charge of Aiko Minowa. Michiru It is in charge of the composition of the soundtrack.
Main voice cast:
- Yuka Iguchi, known for giving voice to COW GIRL on Goblin Slayer and Tsukihi Araragi on Monogatari series, will interpret Myne
- Show Hayami, known for giving voice to Sousuke Aizen on bleach and Nicholas D. Wolfwood on trigun, will play Ferdinand

Based on the light novel Miya Kazuki and You Shia, the anime Ascendance of a Bookworm (d)Honzuki no Gekokujou) made its premiere in Japan on October 3, 2019. The series is made up of 3 seasons (36 episodes) and 2 OVAs. The animation studio Ajia-do He was in charge of the production of the animation of the first 3 seasons of the anime.
Synopsis of Ascendance of a Bookworm:
Uranus Motosu is fascinated by books and has an insatiable desire to read all kinds of literature. He was about to fulfill his greatest desire to become a librarian, but his life was cut short by a tragic accident. As he exhaled his last breath, he could only wish, with all his might, to be able to read even more books in his next life.
As if fate had heard her plea, she awakens reincarnated as Myne, a fragile five-year-old girl who lives in a medieval period. The first thing that assails your mind is your passion: finding something to read. However, he soon discovers, with frustration, that there are almost no books at his disposal.
In a world without printing, books must be written and copied by hand, making them a luxury reserved for a few nobles. But none of that will manage to stop Myne. She is determined to show that her love of reading is unshakable and that, if there are no books… she will create them herself!
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