Ixion Saga: Dimension Transfer - S01

One day, while Kon Hokaze is playing an MMORPG, he gets a request from a female character in the game. He figures he has gotten lucky and found a girlfriend online, but then he suddenly finds himself transported into the world of Mira, where he accidentally saves a young princess by landing on her attacker with his swivel chair. With no idea how he got there or how to get back to his own world, Kon tags along with the princess as part of her honor guard, while a militant faction of the princess's own country tries to capture her before she can complete her arranged marriage.