In a desolate world where demons rampaged the lands, humanity was facing extinction. To combat the onslaught, humans prayed to the Goddess of Gacha. In response, she granted humanity the power to summon heroes capable of challenging the gods themselves. The demons were no match for such might, and the Great Demon War came to an end. With their strength no longer needed, the heroes returned to their respective homes, and as time passed, they became little more than fables in the eyes of the world. In their honour, humanity created <>, a system where intimations of these heroes could be summoned to protect the world once more. However, the need never arose and the shrines stood idle. But now the demons are returning, and the shrines call out to those faithful to the Goddess to wield their power to protect the world once more. However, in the centuries since the Great Demon War, humanity has forgotten not only those heroes, but the Goddess herself. So the shrines search further, finding people who pray to the Goddess of Gacha on a world called Earth. Through them, the Goddess’s power may work once more. After so many years of disuse, however, the system may not work quite as intended….