If you're looking for anime similar to Zero no Tsukaima: Futatsuki no Kishi, you might like these titles. All recommendations are made by Anime-Planet users like you!
The year is 2022, and gamers have lined up on launch day for Sword Art Online, a hotly-anticipated MMORPG that lets players connect to an immersive virtual reality world with special helmets called Nerve Gear. Kirito is one such gamer who's eager to jump back into action, having spent a great deal of time as a beta tester, and quickly becomes friends with newbie warrior Klein. But soon, Sword Art Online's 10,000 players discover that not only are they unable to log out, the only way they can return to their physical bodies is by beating the 100-level tower's final boss - that is, if their HP doesn't drop to zero first, for death in the game means death in the real world. Now, with no one else to turn to, Kirito and the other participants must survive the game as best they can – some forming guilds, others ruthlessly leaving their peers behind, and many tragically falling by the wayside or to the merciless monsters populating the lands...
Both are themed in a fantasy world based on swords and magic. They also have a lead male character with special fighting abilities that they use to protect the ones they love. Both anime's have similar looking characters and they both include humor (more so Zero no Tsukaima), action, and romance. If you love one, you've got to love the other