Boku to Kimi dake ni Seiya wa Konai

On Christmas Eve, a high school student named Riichi finally receives a confession of love from Natsumi. However, moments after she says "I love you," she dies. Each time he tries to prevent this, he finds himself reset to two days earlier, with her confession inevitably leading to her death. The phrase "I love you" acts as a trigger for the time loop, forcing Riichi to relive the same day repeatedly. Despite his efforts to change events, Natsumi continues to confess and die. As he is trapped in this endless cycle, Riichi must find a way to break the pattern and change their fate.