The official website for the television anime adaptation of Kazuki Amamiya's Haibara-kun no Tsuyokute Seishun New Game (Haibara's Teenage New Game+) light novel announced a supporting pair of cast on Thursday. The anime series will premiere on TBS, BS11, and other broadcasters in April 2026.

Voice actors Ryouta Suzuki (Nihon e Youkoso Elf-san.) and Tomohiro Ono ([Oshi no Ko]) are joining the cast as Tatsuya Nagiura and Reita Shiratori, respectively.

Misuzu Hoshino (Saikin Yatotta Maid ga Ayashii) is helming the anime at Studio Comet. Keiichirou Oochi (5-toubun no Hanayome) handling the series composition. Hiromi Ono (Rinkai!) is designing the characters, while Sounosuke Takao (Dosanko Gal wa Namara Menkoi) is composing the music.

Anamiya began penning the romance comedy novel under Hobby Japan's HJ Bunko imprint with illustrations by Gin in December 2021. Hobby Japan published the ninth volume in July 2025.

Misaomaru drew a manga adaptation on the Comic Fire website from June 2023 to August 2024. Hobby Japan published the third and final volume on February 2.

Komochiya began drawing a sequel manga on the same website in December 2024.

J-Novel Club licensed the light novel for digital release in English in October 2022 and published the eighth volume in June 2025, with the ninth volume planned for a February 27 release.

Source: Moca News