In the second year of Nagi Sato's part-time job at a flower shop, she received an official notice from the Ministry of the Environment: the sensitive constitution was rated C, invalid. This means that his mind-reading and precognition are "illusions not worth recording." But he clearly remembered the scene he had foreseen three days ago - Tachibana Kyoka was covered in blood in the collapse of the world, and Tsukishima Hibiki, who called him "Nagi-kun" with a smile, had the imprint of Yotobuchi's contract hidden behind him. You cannot take the initiative to show your superpowers, otherwise you will be forced to purify yourself. You cannot directly warn your companions because it is a violation of rules. Nagi can only use his mind-reading skills to insert the smallest guidance into the conversation, use his precognition to sideways avoid the attack one second in advance, and then pretend to be a coincidence. His body recovered instantly after being torn apart by Ji Yuan, and he wiped away the blood with a smile: "It's just good luck." Bai Fajie didn't believe it. This special inspector from the Ministry of the Environment sets death traps time and time again, and every "lucky" Nagi has challenges his cognition. Until Tachibana Kyoka cried and asked: "What are you hiding?" Nagi opened his mouth and found that in the next scene he had foreseen, he was standing on the altar of the twin world, and his memories passed like an hourglass. And the only way to save everyone is exactly what he has been forbidden to do - actively use his abilities.