The Shadow: Constant Soul Beyond Fate (Formerly: The Shadow Alchemist Assassin: Echoes of the Constant Soul

Kurogami Ren wanted only the simplest dream of all: to be teleported to a fantasy world, build a harem of incredible women, and escape the crushing monotony of modern life. Possessing a brilliant and strategic mind, he genuinely believed that an isekai would be his well-deserved paradise. But the universe never grants wishes for free. 

After terrible shadow creatures brutally murder Aurelia Virel—the only girl he ever truly loved—Ren becomes the plaything of Elythra, the Goddess of the Void. Condemned to wander infinitely through exactly three completely different worlds and fragmented timelines—sometimes thrown centuries into the past, sometimes dragged far into the future of different eras within the same world—he discovers the cruelest rule of this cosmic game. With each reset, Ren remembers everything. At first, it seemed like no one remembered him. Not even Aurelia, who reincarnates in each era as a complete stranger. 

But the rules of the board are changing, and some extraordinary women within his harem are beginning to retain memories of past loops, recognizing their King across the eras. To survive the weight of absolute isolation and prevent his mind from breaking, Ren transforms his tactical genius into his ultimate weapon, operating covertly beneath the forbidden and lethal capabilities of an Assassin and the molecular engineering of an Alchemist. Behind a charismatic facade of superficial flirts and dry jokes, he hides an implacable and brilliant mind—silently recruiting and leading his harem to conquer the board. The game has changed. The chessboard resets. And he is searching for an opening to break the loop of the Goddess Elythra.