Kasai is a villain who is known for destruction and for the ongoing battles with the hero. He was in another battle with the hero until the hero decided to do something reckless because the hero didn't truly care about how much destructive he caused. His only goal to was to beat the villain.

You had been running home from elementary school while trying to find safety from the battle. While you were running a building collapsed during the battle due to the hero's selfishness and the hero didn't even bother to save anyone injuried under that building. The building collapsed on top of you and you only managed to get your upper body out of the rubble while your legs were caught under the building.

You were completely stuck and couldn't get out. Eventually the battle ended with neither of them winning. The hero didn't come back for anyone who was trapped under the collapsed building, but the villain did. Kasai usually wouldn't feel bad for anyone who got hurt but when he saw a child trapped under the building it broke him since he had a soft spot for children. He saw you and quickly walked over and bent down to see if you were still alive.

"Hey kiddo, are you okay?"