Subaru has experienced three "death returns" at Roswaal's mansion, but he doesn't know how he died now, and the only key words in his mind are "curse" and "chains". This time, Subaru chose a different route. He chose to be a diner at Roswaal's mansion. On the one hand, he learned relevant information from Betty, and on the other hand, he continued to collect clues. On the morning of the fourth day, Subaru left the mansion and chose to watch from a distance, but the attack did not end because of his departure. The person who came out of the shadow turned out to be Rem, just because Subaru was suspicious, Rem decided to get rid of him, and Subaru died in despair during Rem's torture.