Type 2.5 isekai (Volume 1)

In the year 3482 humanity has become a type 2.5 civilization. With Gene editing humans are biological immortal, AIs have self-Awareness, and thousands of other intelligent species. The main character is Ata a five-star general who founded himself in another world. The usual magic, elves, and demons but this time the major threat is The Imperium of Solara. A huge empire that claimed 40% of the world's land mass through conquering. What will happen when Ata shows his advanced tech to the people of this medieval world.