A teaser trailer and teaser visual for the Haibara’s Teenage New Game+ (Haibara-kun no Tsuyokute Seishun New Game) TV anime adaptation have been released. An April 2026 premiere window and details about the main cast and staff were also revealed.
Yuto Uemura is playing protagonist Natsuki Haibara, who gets the chance to redo his high school life. Kanon Tako voices Hikari Hoshimiya, whom Haibara likes.
The staff credits include:
• Director: Misuzu Hoshino (Hokkaido Gals Are Super Adorable!, the upcoming Tetsuryo! meet with Tetsudo Musume)
• Series composer: Keiichiro Ochi (The Angel Next Door Spoils Me Rotten)
• Character design: Hiromi Ono (Rinkai!)
• Animation production: Studio Comet
©雨宮和希・ホビージャパン／「灰原くんの強くて青春ニューゲーム」製作委員会
Haibara’s Teenage New Game+ is based on the light novel series written by Kazuki Amamiya, illustrated by Gin, and published under Hobby Japan’s HJ Bunko label. J-Novel Club describes the synopsis as such
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!
The light novel series began in 2021 and has nine volumes as of July 2025. There are manga adaptations of the first two volumes,
Source: @haibara_anime
