Haibara's Teenage New Game+ - S01

College student Natsuki Haibara already has a stable future lined up, but he often finds himself thinking back to his high school days. Back then, he was socially anxious and overweight, and his attempts to become outgoing went nowhere. One evening, Natsuki prays for a chance to redo his teenage years, and the next morning he discovers he has traveled back in time to before his high school debut. With one month left before the entrance ceremony, Natsuki immediately uses the opportunity to get in shape. When the first day of high school finally arrives, he makes a good first impression and befriends familiar faces, including Hikari Hoshimiya, his high school crush. Natsuki quickly realizes his feelings for Hoshimiya haven't changed, and he sets a new goal: to go out with her. While enjoying time with Hoshimiya and his other friends, Natsuki rekindles his love for basketball and even gets a part-time job at a local cafe. But new friends bring unfamiliar challenges, and Natsuki must overcome them if he wants to make the most of his adolescence.