The anime adaptation of Yashiro’s light novel series, Reincarnated as a Neglected Noble: Raising My Baby Brother With Memories From My Past Life (also known as Shiro Buta Kizoku desu ga Zense no Kioku ga Haeta node Hiyoko na Otōto Sodatemasu), is generating buzz with the release of its second promotional video. The video unveils and previews the opening and ending theme songs, adding another layer of excitement for fans eagerly awaiting the series.
Theme Songs Announced
The second promotional video, released on Sunday, April 6, 2025, (which is “Shiro no Hi” or “White Day” in Japan), features snippets of the anime’s theme songs:
- Opening Theme: “Kuchinaoshi” (Palate Cleanser) by Wanuka
- Ending Theme: “Mada Shiranai Story” (Yet Unknown Story) by Ms.Ooja
These songs promise to set the tone for the series, blending seamlessly with the anime’s visuals and narrative.
Early Streaming and Broadcast Details
Anime fans in Japan can rejoice! Reincarnated as a Neglected Noble will debut on the ABEMA streaming service on April 20, 2025, with the first two episodes available for free. While the television broadcast on Tokyo MX, Yomiuri TV, and BS Fuji is still slated for July 2025, the early streaming release offers a sneak peek for those who can’t wait.
Plot Overview: A Neglected Noble’s Isekai Adventure
Reincarnated as a Neglected Noble: Raising My Baby Brother With Memories From My Past Life is an isekai fantasy story with a comedic twist. The plot revolves around Ageha, a five-year-old overweight prince who is neglected by his parents and living in the declining Kio Empire. Ageha retains memories of his previous life as a Japanese man.
One day, Ageha realizes that his younger half-brother, Regulus, is destined to kill him to inherit the family title. Instead of fighting fate, Ageha decides to raise Regulus himself, hoping to change the future. As Regulus grows attached to Ageha, Ageha transforms into a doting older brother.
The series follows the two brothers as they manage their kingdom, navigating political intrigue and even encountering the gods, all while striving to create a better future for their land.
Production Staff
The anime adaptation is being brought to life by a talented team:
- Director: Masafumi Sato (A Salad Bowl of Eccentrics)
- Series Composition: Mitsutaka Hirota (Rent-A-Girlfriend)
- Character Designer: Tomoko Miyakawa (Sweet Reincarnation)
- Music Composer: Arisa Okehazama (The Apothecary Diaries)
- Animation Studio: Studio Comet
Cast
The anime features a cast of talented voice actors:
- Misaki Kuno as Ageha
- Mariya Ise as Regulus
- Shunichi Toki as Romanov
- Aki Toyosaki as Princess Hyakka
- Haruhi Nanao as Rottenmeyer
- Rie Hikisaka as Alice Utsunomiya
- Koji Yusa as Victor
- Ayumu Murase as Igor
- Hiroki Nanami as Laala
Notably, Misaki Kuno, Mariya Ise, Shunichi Toki, Aki Toyosaki, Haruhi Nanao, and Rie Hikisaka are reprising their roles from a previous CD drama.
From Light Novel to Anime: A Journey
Reincarnated as a Neglected Noble began as a web novel series written by Yashiro on the user-generated novel publishing website Shōsetsuka ni Narō in August 2018. TO Books later acquired the series and has published 13 volumes since January 2020.
The series also has a manga adaptation with art by Yokowake, which has been serialized online via TO Books’ Nico Nico Seiga-based Comic Corona manga service since August 2020. As of January 2025, six tankobon volumes have been released.
The anime television series adaptation was announced on July 17, 2024. Crunchyroll will stream the series.
A Multi-Media Franchise
The Reincarnated as a Neglected Noble franchise has expanded beyond light novels and manga to include a stage play adaptation. A stage play adaptation was held at the Shinjukumura Performing Theater in Shinjuku, Tokyo between March 24 and 28, 2021. Another stage play adaptation featuring an all-female cast was held at CBGK Shikugeki!! between October 18 and 22, 2023.
Where to Read the Manga
NTT Solmare’s MangaPlaza website and app releases the manga adaptation in English digitally.
Final Thoughts
With its engaging storyline, charming characters, and now, the reveal of its theme songs, Reincarnated as a Neglected Noble is poised to be a delightful addition to the isekai anime landscape in 2025.
