I was playing a robot battle game when I got transported to a fantasy-style alternate world.

A young man who was obsessively playing a robot battle game noticed a video advertisement for what appeared to be a fantasy game in the corner of the screen while browsing the game's forum between matches. However, it was actually a dimensional rift that would draw the young man to another world. Driven by curiosity, the young man clicked on the video and was transported to that other world as the character he had been playing in the game he was using. Along with the combat robots he had been piloting in the game. In a sword and magic world where giant armored knights powered by magic and legendary colossal beasts roam freely, the young man dominates his enemies while piloting five combat robots: a general-purpose type, an air combat type, a land combat type, a naval combat type, and an experimental prototype type. In other words, it's a story about a young man who brought realistic-style mecha like mobile suits into a magical robot world similar to Danbine or Holy Seal. It has some comedic and erotic elements.