After dying in a truck accident (classic isekai style), a cynical office worker is reborn not as a slime, a hero, or even a typical demon-but as the Demon Progenitor, the very first and the most ancient source of demonic power in existence. Now, trapped in the Tensei Shitara Slime Datta Ken universe long before Rimuru's rise, he must navigate his overwhelming abilities, chaotic demon subordinates, and the terrifying responsibility of being the origin of all demons.
This novel is good overall, but it lacks proper character development scenes—it's more like a time skip that skips over character growth. The main character is overpowered from the start, and sometimes it feels like he's trying to stay low-key without making any real effort to hide his powers. This gets a bit frustrating at times, and I’ve often felt like skipping parts of the story. There were even multiple moments when I seriously considered dropping this fanfic altogether.
The MC’s journey from confusion to dominance is well-paced, balancing action, strategy, and character development. Unlike typical overpowered protagonists, this one faces meaningful challenges, including political intrigue and moral dilemmas. The side characters are fleshed out, each with unique motivations that add depth to the story.