Ixion Saga: Dimension Transfer

One day, while Kon Hokaze is playing an MMORPG, a female character in the game sends him a request. Believing he’s hit the jackpot and found an online girlfriend, he’s shocked when he suddenly gets pulled into the world of Mira. By sheer chance, he crashes onto an attacker with his swivel chair, saving a young princess in the process. Stuck in this strange world with no clue how to return home, Kon joins the princess as part of her honor guard. But trouble arises when a militant faction from her own kingdom tries to seize her before she can fulfill her arranged marriage.