The main story of the light novel series has concluded with its 11th volume, with a 12th epilogue volume planned; the TV anime adaptation premiered in April 2026 and has drawn early criticism.
Kazuki Amamiya's Haibara's Teenage New Game+ light novel series ended its main story with the 11th volume on Monday, June 1, 2026. A 12th volume containing an epilogue is still planned. The series won the HJ Novel Award grand prize in 2020 and began its final arc in July 2025. The TV anime adaptation debuted in April 2026.
Early reception of the anime has been critical. Anime Feminist published a review of the first episode that found the premiere unappealing. The episode introduces Natsuki Haibara, a lonely college graduate who prays to return to his high school years. He gets his wish and works to improve his body and mindset before restarting his freshman year. The review criticizes Natsuki as a typical sexist male lead whose main goal is to win over his teen crush, rather than become a genuinely better person. The reviewer also objects to the depiction of the protagonist's pre-time-travel weight as a sign of failure, calling the trope tired. The review describes the episode as treading familiar ground for the male second-chance genre and not a standout, and does not recommend it unless the viewer already enjoys this type of narrative.
The series now has a completed main narrative and an anime that has drawn early criticism for its handling of character and body-image tropes. The epilogue volume will be the final release for the light novel series.
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Kazuki Amamiya's Haibara's Teenage New Game+ light novel series concluded its main story with the 11th volume on Monday. A 12th volume containing an epilogue is planned. The series, which won the HJ Novel Award grand prize in 2020, began its final arc in July 2025 and inspired a TV anime that debuted in April.