Meet Shinonome Neo, a 28-year-old single man haunted by past bullying at the hands of his senpai, Maki Yuuki. Scarred by this experience, Neo struggles to trust others or find love. When he is invited to Maki's wedding years later, he seeks revenge by ruining the ceremony, only to meet a tragic end. However, fate grants Neo a second chance as his spirit time-travels to the past, offering him the possibility to rewrite his life's story and prevent the sorrow that once defined him.