Series by 福田宏

Yamato Shiroaya is an ordinary high school boy who receives a mysterious bracelet from a fortune teller. The bracelet lets him jump to the future once and then return to the present. When he tries it, he lands in a city where giant Buddhist statues are slaughtering people. He rushes back hoping to stop the disaster before it starts. Then he learns that the ruined future is only five minutes ahead of his own time.