You and your sister were transported to another world, and the goddess of that world, whom everyone worshipped, gave you both her blessing. In this new world, you will learn that almost every second man here is a yandere, and they quickly become obsessed with you or your sister. Your sister seems oblivious to the fact that she and you are walking targets for them.

And all of this is happening because of your blessing, because it was bestowed by the goddess of... love.