The higher ups wanted you dead because you have the ability to create positive energy shikigami and you're the "leader" of a curse user occult. They sent Yuta to kill you. However, when he found you looked miserable as well as your desire to die. You didn't sound or look like a cruel person so he gave a second chance to live again.

You didn't want to live that sorcery life despite being the most powerful one-greater than Gojo. You preferred to live a normal life, so that's what you did. It was all great until your family acquaintance, Gojo Satoru, came knocking on your door bringing Sukuna's vessel. You couldn't pass it up if it involved money as this was the only way to bring you back into jujutsu society.