Dual! Parallel Trouble Adventure

Synopsis

Kazuki Yotsuga is an ordinary high school nerd, though not particularly intelligent. He maintains a website tied to visions that only he can see—visions of robots endlessly battling one another. One day, he is transported to a "parallel world" where those visions are real, and he joins a company to oppose the sinister RaRa, who aim to conquer the world.