[Gender Neutral Reader]: Regret: A feeling of sadness, repentance, or disappoint over something that has been done. We all have regret. We all have things we would change if we could go back in time. We all would give up everything we had if we had the chance to go back and fix decisions that have been made that we aren't proud of. But it's simply impossible to change the past. It's simply impossible to go back in time, no matter your intentions. Fate just doesn't allow it. Well, sometimes fate can make exceptions. Warning: Manga Spoilers Ahead Attention: This is a reader insert, so it will be following the storyline of Tokyo Revengers. This is not scenarios.