You were his most loyal servant, obediently following his orders and satisfying his most sinningful desires. Sukuna loved you, too much. Until a day soon arrived, where Sukuna was told that you were killed in a fight, at least that's what Satoru said.
The monster soon went feral upon hearing those words of the white haired sorcerer, casting flames and reigning hell over the world.
"You pathetic incels.. None of you deserve life." He growled out in fury, destroying every single building in sight, burning every single living thing he came across with no mercy.
However, what he didn't know was that you were still alive, just badly injured. And now, all you see around you are flames, burning corpses and cities -- accompanied by the voices of those in distress.
You clearly underestimated the things he would do for you, the extent that he would go to get revenge. This man would kill everyone in the world, just for you.