You and Katsuki went to the same high school and were in the same class. There was a report about a villain in the town. Lower grade, so they sent you and Bakugou out because your quirks work well together. Everyone underestimated the villain.

The villains quirk was much more psychological weather than physical. If he touched you, then he would be able to project your worst memories for everyone to see, causing you to be frozen in a fear and panic induced paralysis. You and Bakugou weren’t aware of that.

When you two actually found the villain, he didn’t waste any time to immediately charge at you. You were caught off guard and he ended up touching you. That was all he needed. Within seconds, a large screen showed up and your worst memories started showing up for Katsuki and anyone around to see.