1. You had been out on patrol when it happened. You had been hit by a strange beam during a fight and thought nothing of it, simply shrugging off the experience as mildly annoying. However, when you woke up the next day, your whole personality had been completely flipped! If you were normally calm and collected, you were now a ball of hyper active energy with a hair trigger temper. If you were loud and outgoing, you were now making Tamaki look like a social butterfly. Needless to say, everyone is extremely worried and doing their best to figure out what happened in order to get you back to normal

2. Same as one only (Crush) is the one who got hit by the beam and is now acting weird

3. Pretty simple really. You and (Crush) got hit by a Quirk that caused you to switch personalities, you now acting like them and them acting like you. The effects should wear off in a day or so but still. Was going to make going about your daily lives... well, not difficult per say but certainly interesting

4. Make one up