Sword and Expedition: I Walk with God

The protagonist Atoment is reborn in a world ruled by the church and aristocracy under the guidance of a mysterious old man. After the mysterious old man makes a prophecy, he is reborn as the son of a count. For seventeen years, he lived in a twisted world ruled by the church with "wisdom" and "torture by fire", burdened with the emptiness of memory and instinctive rebellion. At his adult birthday party, his father will grant him the Northern Territory, openly challenging the authority of the church. That night, the mysterious old man appeared again and gave him an obsidian necklace that could reveal the truth.