The Chronicles of a Lost Man in His Forties Founding a Nation ~Commonsense is Hindering Me From Becoming TUEE~ (Associated Names)

The protagonist is a former tabletop RPG fanatic who is now just a normal salaryman (single, male, 42 years old). He is sent to a parallel world by a mysterious entity. The protagonist ends up living in the world ‘Sedia Continent’ as ‘Gio Margils,’ his max level wizard character from the classic tabletop RPG ‘Dungeons…