A computer programmer is transported to a fantasy world where life is an adventure that's fun and full of girls.

Ichirou Suzuki, a programmer nearing his thirties, is drowning in work. Worn out, he eventually has a chance to catch up on sleep, only to wake up and discover himself in a fantasy RPG world, which is mashed together from the games he was debugging in reality. In this new place, he realizes that not only has his appearance changed to a younger version of himself, but his name has also changed to Satou, a nickname he used while running beta tests on games. However, before Satou can fully grasp his situation, an army of lizardmen launch an assault on him. Forced to cast a powerful spell in retaliation, Satou wipes them out completely and his level is boosted to 310, effectively maximizing his stats. Now, as a high-leveled adventurer armed with a plethora of skills and no way to return to reality, Satou sets out to explore this magical new world.—MAL Rewrite

"Satou," aka Ichiro Suzuki is a programmer in the middle of a death march. He was supposed to be taking a nap but somehow wakes up in another world... What lies before him is what looks like the menu screen of the game he was working before his nap. He's at a complete beginner stage at level 1. However, he had three "Meteor Showers" which could level a whole map. Suddenly, a whole group of lizardmen appears in front of him. In order to survive, Satou uses Meteor Shower, his level jumped to 310 and he became extremely wealthy. Whether it be dream or reality, Satou's journey was now beginning.—Crunchyroll