大和帝国記　～ＴＳ娘、ゲームで作った最強近代国家でファンタジー世界を制す～ (Associated Names)

Last Battalion Online is an online strategy simulation game in which players create a nation and aim for world domination. The main character, who was playing the game, wakes up to find that he has become “Eryutheia” his own character in the game, and is leading the “Yamato Empire” a modern nation he created. He…