Death March to the Parallel World Rhapsody

A burnt‑out coder is reborn as a level‑310 hero in a world built from his own debug logs.

Satou, a weary thirty‑something programmer, finally crashes from a marathon debugging session only to awaken in a sprawling RPG‑styled world that feels like a mash‑up of his own codebase. His body has been swapped for a teenage avatar, and his new moniker—Satou—mirrors a nickname he used while testing beta patches. Before he can process the surreal scenery, a horde of reptilian soldiers ambushes him. Instinctively, he unleashes a high‑level spell that annihilates the attackers and catapults his experience to a staggering level 310, granting him an arsenal of overpowered abilities. Now equipped with god‑like stats and a bewildering array of magic, Satou roams this vibrant continent, encountering everything from mischievous sprites to ancient ruins pulsing with forgotten tech. Though the world teems with classic fantasy tropes—dragons, guilds, and sprawling dungeons—its underlying logic feels oddly familiar, as if the game's engine itself is leaking into reality. With no clear way back to his office cubicle, Satou must decide whether to simply explore, build a harem of grateful companions, or use his newfound power to reshape the very fabric of this parallel realm.

An overpowered isekai adventure where a 29-year-old programmer explores a game-like world while accumulating a harem of devoted girls, several of whom he initially buys out of slavery. Expect heavy fanservice, questionable age dynamics, and slavery themes framed as benevolent rescue, wrapped in a low-stakes power fantasy.