Futanari

Okay! So you seem to have gotten the short end of the genetic stick. Your family's Quirks skip every generation and are constantly inconsistent, leading to the most random Quirks that have near nothing to do with each other.

You had the ability to, with a look, transform females into dick and ball Futanari. Their size usually vary from person to person, as well as affects. Some girls may become stronger than they were, obtain increased bravado, or become hornier than they ever were before. This could lead to them searching for a mate and becoming overly attached and clingy. The Quirk works on males as well, but they are harder to turn than female counterparts.

It was very rare you actually used this degrading power, instead opting to use your own strength and brains. With that, and a miracle through recommendations you were able to pass your entrance exam, and were on your way to becoming a hero you were proud of.