Death March kara Hajimaru Isekai Kyousoukyoku

When a 29-year-old game programmer nods off during a marathon debugging session, he awakens to find himself in a fantasy world. Not only that, but he's been de-aged to a 15-year-old, his name is Satou, and he's suddenly sporting max-level stats and a treasure trove of powerful abilities from the very game he was just working on. Talk about an overpowered protagonist! Now, with a new lease on life (and an inventory full of cheats), Satou embarks on an adventure. He's determined to explore this vibrant new world, meet its diverse inhabitants, and perhaps even unravel the mystery of his sudden transmigration. But with such immense power at his fingertips, he'll need to be careful not to cause too much collateral damage along the way.

✦ AI-drafted summary