The production team for Seirei Gensouki: Spirit Chronicles confirmed that the previously announced second season will air sometime in 2024. The news was confirmed on the official anime’s Twitter account and a mini web anime video featuring Celia Claire.
The anime’s first 12-episode season aired in Japan from July 5, 2021 to September 21, 2021. Crunchyroll streamed the anime series worldwide as it aired in Japan.
Season one director Osamu Yamasaki (ItaKiss) will direct the second season, with Kyoko Yufu (DARLING in the FRANXX) also returning as character designer. During the first season, Yamasaki served as series screenwriter, along with Mitsutaka Hirota (Rent-A-Girlfriend), Megumu Sasano (Bobobo-bo Bo-bobo), and Yoshiko Nakamura (Re:ZERO -Starting Life in Another World-).
Other season one staff members include Takehiko Segawa (Arte) as art director, Tomoko Kohioki (Citrus) as color key artist, Norimasa Teramoto (SSSS.Gridman) as director of photography, Keisuke Yanagi (Rail Wars!) as editor, Hiroto Morishita (Beelzebub) as sound director, and Yasuyuki Yamazaki (Lord Marksman and Vanadis) as music composer. TMS Entertainment handled the animation production for the series.

Meanwhile, the voice cast includes Yoshitsugu Matsuoka as Rio/Haruto Amakawa, Akane Fujita as Celia Claire, Yuuki Kuwahara as Aishia, Tomori Kusunoki as Latifa, Sayaka Harada as Miharu Ayase, Sayumi Suzushiro as Christina Beltrum, Kaede Hondo as Flora Beltrum, Sayaka Kaneko as Roanna Fontaine, Kenji Hamada as Alfred Emerle, Atsushi Tamaru as Charles Arbor, Kouji Yusa as Reiss Vulfe, Nao Tōyama as Liselotte Cretia, Hiyori Nitta as Sara, Yukina Shutou as Orphia, and Asuka Nishi as Alma.
Seirei Gensouki: Spirit Chronicles is based on the light novel series written by Yuuri Kitayama, with illustrations by Riv. The series began as a web novel launched on Shousetsuka ni Narou from February 12, 2014 to October 30, 2020. Hobby Japan then published the light novels on October 1, 2015 and has released 23 volumes as of February 2023.
The series also inspired a manga adaptation by Futago Minaduki in 2017. It is the second manga adaptation of the series overall and has released nine tankoubon volumes as of February 2023.

J-Novel Club releases the light novels and manga in English and describes the synopsis as:
Meet Rio: a callous orphaned boy living in the slums. At only 7-years-old, he realizes he’s actually the reincarnation of Haruto Amakawa, a Japanese university student with a tragic past. While still reeling from this shocking epiphany, Rio also comes to learn that he possesses extremely potent magical abilities and uses his new powers to solve the kidnapping case of a little girl. His good deed is acknowledged, and he’s rewarded by being enrolled into… a prestigious academy for noble children…?