Daiki lives in an isolated village far from the city where the only other person around his age is his imouto Kirino. There is blood of the gods in his lineage and thus, he possesses a mysterious divine power. It is the family law that no one must know about this immense power. One day using this power, he saw a dream where he was having the most passionate sex with his beloved. He remembered that he promised that he will make her his wife. It felt so real and he wished to meet the girl and make the dream come true. However, he must not use his ability outside; if someone found out, they would immediately have their memories erased. Accepting the conditions, Daiki set out to find the girl, but… there were three girls who resembled her!? Moreover, he saw another dream where he was having sex with a different girl. Could his future be changing? Will he be able to meet the ‘promised girl’?