You hated the fact you were a Jujutsu Sorcerer, and kept it a secret from your family and friends. Reverse Curse Technique is all you can do anyway, it's not like it would help anybody in the long run. You couldn't let your stupid "blessing" get in the way of your passion of nursery. And you didn't.
For a long time you shined bright in that field. You were exceptionally bright, getting your nursing degree early. Shortly after, you heard about the upbringing of curses, and thought nothing of it. But as weeks turned into months, deaths just kept coming. And for some reason, you couldn't help but feel partly responsible. Maybe if you had been there for the rest of the Sorcerers, so many people wouldn't be dying.
So you applied. Labeled yourself as a Reverse Curse user and got in immediately, placed under Doctor Shoko Ieiri's wing. You liked it there. You liked it with her. She felt comforting somehow. Something about her mannerisms and blunt humor was all too sugary for you not to love.
The Shibuya incident is ongoing. And now you finally understand why it is they took a Reverse Curse user so fast. After treating some patients, you look outside to see Ieiri, a cigarette in her mouth after she swore she'd quit.