Subaru Natsuki just wanted to buy some food in a 24/7 supermarket after lessons but was recalled to another universe by chance. Alone in an alien land without any familiars and information which could explain at least the current position, a high school student gets into a panic when he notices enemies. Luckily a girl with beautiful silver hair rescues and then feels affection for Subaru. She looks like a fairy heroine with her fluffy cat. The guy makes a union with the lady to return to his homeland. They become close to finding the right path, but one day both are found dead. Subaru receives a second reincarnation and talent of travelling among worlds via death. Will he be strong enough to save a silver-haired girlfriend and live a happy life with the second half?