Since birth, 17-year-old Nowaki Asunaro has been abandoned by fortune. Every step he takes brings bad luck, whether it takes the form of a bucket of water falling on his head or being blamed for crimes he never committed. Even for someone exceptionally unlucky like him, he still hopes to become friends with the love of his life: Hashihime Banri. The only problem is that every time he almost gets close to her, his lack of luck blocks the way. On one typical day for him, filled with unfortunate accidents, he ends up having to shelter from the rain in a forsaken and dilapidated temple. He becomes feverish from cold and hunger, but in desperation, he prays to the gods that he survive this day and become friends with Banri. Lo and behold, it seems like he accidentally summoned a God(?). Will this accident bring him the luck he never had?