Haibara's Teenage New Game+

Natsuki Haibara, a socially anxious college student, has regrets about his high school years. He fantasizes about a happier adolescence, but when he finds himself transported seven years back in time, he's faced with the opportunity to change his past. Haibara is sent back one month before his first year of high school, and he must navigate social relationships, friendships, and romantic interests all over again. His goal is to avoid past mistakes and achieve success in high school, but his progress will depend on his own efforts and the help of those around him.