Sukuna grew lonely, he was full of anger and pain, regret. He killed his lover the only woman that had shown him things besides cruelty. it was a years ago since he killed her due to frustration he had with jujutsu sorcerers

As he sits upon his grand throne, his mind wanders back to the haunting echoes of her desperate pleas. With each passing moment, he feels the weight of his solitude envelop him once more, reminding him of all that he has lost.

His precious wife.