Haibara's Teenage New Game+ Episode 1: The Gray Boy's Plan For a Colorful Adolescence

The episode begins with Natsuki, an adult man, watching a romantic film he has seen before. He reflects on his inability to understand why people re-watch movies, finding no joy in knowing the ending. Yet, as he watches, he realises that knowing the outcome allows him to critically view what could have been done differently. This melancholy contemplation sets a somber tone for his present life.

Natsuki's thoughts drift to his own past, specifically his first year of high school. He recalls a painful confrontation with Tatsuya, who dismisses him with sharp words like, "More than anything, I'm just sick of you." This memory defines his high school years, which he summarises as a

Lying on his futon, longing for a chance to redo his youth, Natsuki suddenly finds himself gasping, wearing a junior high school uniform and glasses. His younger sister, Namika, appears, inquiring about a loud noise, but she is also in a junior high uniform. The world has shifted, bewildering Natsuki, who initially dismisses it all as a dream.

After briefly returning to his adult self, Natsuki wakes once more as his junior high self. He confirms the year is 2014 on his phone, realising this is no dream. He embraces the impossible, shedding his adult resignation for a fierce determination. His mission: to rewrite his past, transforming a 'gray youth' into a 'rainbow of colors.'

Natsuki embarks on an intense regimen of physical training, pushing himself through exhaustion and rain, motivated by the painful memories of his past failures. He resolves to never experience such suffering again. This physical transformation is swiftly followed by a social one, as he removes his glasses for contacts and gets a stylish haircut, shedding his old image completely.

The newly transformed Natsuki encounters Miyori, his childhood friend. She immediately notices his drastic change, playfully teasing him about his previously "uncool" and "fat" self. Their lively banter confirms their long-standing relationship and Miyori's astute perception of Natsuki's new persona. The revelation that they will attend the same high school surprises Miyori, though Natsuki, with his future knowledge, was already aware.

Natsuki arrives at Ryome High, confident and observing the effect of his new appearance. He immediately spots Hoshimiya Hikari, the girl he wants to pursue, and declares his intention to win her heart. He also finds himself in the same class as Uta, Reita, and a more subdued Tatsuya, whose previous antagonism is conspicuously absent, confirming Natsuki's memories are not entirely accurate.

Natsuki's future knowledge is proven fallible when he mistakenly asserts Reita was a basketball player, not soccer. Miyori points out his memory lapse. This prompts Natsuki to confront the reality that his past was not as clear-cut as he remembered, pushing him to actively reshape it rather than merely replay it. He resolves to join the basketball club, determined to seize every opportunity this second chance offers.

Natsuki walks home with Hoshimiya, taking the initiative to suggest a group chat for their new class. He playfully proposes names like "Hoshimiya Fan Club," eliciting a blush from her. When Hoshimiya ultimately creates the chat under the name "Natsuki-kun Family," her playful wink signals a nascent connection. The sudden message from Yui jokingly admonishing them for flirting further solidifies the emerging social dynamic.

The episode concludes with Natsuki and Hoshimiya taking a selfie together under falling cherry blossoms, encapsulating the hopeful beginning of his 'rainbow-colored youth' plan. The ending credits and next episode preview visually reinforce this optimism. They depict future moments of happiness, friendship, and romance, showcasing the vibrant life Natsuki is determined to build. The journey ahead is clearly one of joy and success, contrasting sharply with his earlier regrets.