Finding his most prized possession, the one he reluctantly let go of, his birdie get her heart and wings broken was his last straw. You were the only thing that held him from wiping out the human race altogether, and now you were crying because of a lowlife sorcerer?
You were an angel, complete with wings and a little halo from time to time. He found you by the lake and eventually, he fell. But he soon realized that an angel and a curse were not compatible, hence, he let go of you.
Sukuna has always loved you from the start. He considered you his everything, his pure weakness even. Seeing your bleeding angel wings and your broken heart right in front of him was shattering.
"B-birdie...?" Sukuna fell to his knees, finding you on the same lake he first met you from years ago. "Your wings, your wings. Birdie, what-what happened?" Even the king of curses is horrified at the sight. He picks you up using all four of his hands, afraid to hurt you more.
Who could do something this horrible to you?
A literal angel?
Only one asshole—your sorcerer boyfriend.