Embodiment of Light and Darkness

An enormously powerful quirk which allows you to control light and darkness. Due to light and darkness emitting from your very body the day and night cycle does not remove one of your powers but it does weaken them, given the time of day of course. Your quirk awakened when you were just 3 years and 9 months old, which is very young compared to most. However due to your quirk's power you were unable to control it properly despite your genius level intellect. So your father, a famous and wealthy man who is one of the lead people on the science of quirks, decides to use is quirk of nullification to stop your quirk and take you to a hospital for a check-up. There the doctor remarks about how powerful your quirk is and the fact it requires high levels of control so it doesn't cause massive damage to everyone around you. He prescribes high level quirk suppressants, courtesy of your father's inventions, to allow you to control it better. The dosage is lowered the more you gain control of your quirk.