In a world where a few have extraordinary powers and others forge contracts with spirits, the government created "The Federal Frontline," an agency with two factions—Twinrova and Undercon—to maintain order. The protagonist, driven to help others, uncovers the dark truth of this world. As he faces powerful foes and ethical dilemmas, he struggles to retain his humanity. This story explores the thin line between good and evil in a world on the brink of chaos.