The Haibara’s Teenage New Game+ (Haibara-kun no Tsuyokute Seishun New Game) light novel series is getting an anime adaptation. The books are written by Kazuki Amamiya, illustrated by Gin, and published under Hobby Japan’s HJ Bunko label.
The anime’s announcement coincides with the release of Volume 9 on July 1, 2025 JST. The first volume was released in December 2021. The series has currently inspired two manga adaptations, with each adapting a part of the story and featuring a different artist.
Synopsis:
We all have embarrassing memories or deep regrets from high school, right? Socially anxious college senior Natsuki Haibara sure does. When he thinks back on that time of his life, all he has are fleeting fantasies of a happy adolescence that could have been. Imagine his bewilderment and surprise, then, when he inexplicably finds himself seven years in the past one month before his first year of high school! Can Haibara avoid his previous mistakes, make his way to the top of the school social pyramid, and end up with the girl of his dreams? Or will he be forced to relive three years of solitude as the most hated guy in school? He’ll need all the help he can get in order to succeed, from a workout regimen to online how-to guides, a childhood friend, and plenty of sheer willpower. Watch as Haibara takes a second shot at his teenage years!
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— HJ文庫公式アカウント (@HJbunko) June 30, 2025
灰原くんの強くて青春ニューゲーム
アニメ化企画進行中‼
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