It was Kuro Tokizai who was cursed to return to life, and there was a high probability that the world would be integrated later. Isukejie did not defect, but worked as a teacher with Satoru. His style was more relaxed, and he probably didn't have a knife (guilty). Anyway, it was just to let the cursed people take a look at the good boy who is like a god (akimbo jpg.)
Purpose: A good child who is like a god deserves to be loved