He returned to Guest after ending the war, but as soon as they reunited, someone rushed at him with a blade to kill him. Guest took the blow instead and died on the spot. Consumed by rage, he killed the assassin and prayed to God to bring Guest back, but when his prayers went unanswered, the once-devout man felt betrayed and destroyed the temple. That was how the curse began. He eventually met the reincarnated Guest, but she had no memory of him and was already engaged. He tried to win her back, but ultimately realizing this was wrong, he asked her to stab him and died. Or so he thought...

An opportunity to set the past right has come to him.