Toaru Majutsu no Index, Kore wa Zombie Desu ka? Recommendations
The main protagonist of Kore wa Zombie Desu ka? seem to have some ability of stealing/disable magic, that remind me of Toaru Majutsu no Index. And both are harem/action anime
They both operate on the premise of being an action/drama, but have a lot of comedy moments thrown in (More in the case of Kore wa Zombie---). The main characters both end up with a harem, have some form of ability to absorb magic, and are both "average guys". The first female characters introduced in each series also have incredible magic powers, but are unable to use them unless the situation is dire. They also have some parallels in appearance.
Oh, and the fanservice quotient for both is through the roof.
Both Kore wa Zombie Desu ka? & Toaru Majutsu no Index is similar in a way that they are both set in an ordinary world where special powers exist. The main character in each of the series is abused for either who he is or for what he does but is dependable when the time calls and will always fight for what they think is right. The MC in both is also accompanied by someone who holds extreme power but in unable/refuses to for certain reasons and is constantly try to protect them. Along their journey continues they overcome problems and gain new allies in
I'll admit this may seem like an odd recommendation, but if you look closely you'll see how similar they are. The main characters in both (Touma/Ayumu) are very unlucky but kind-hearted teenage boys who, upon meeting a mysterious girl with a distinct appearance and uncontrollable power, discover that there's much more to their world than they thought. They also attract the feelings of multiple girls in the series. In both cases, these include the aforementioned mysterious girl (Index/Eucliwood), a prideful, short-tempered brunette (Mikoto/Haruna) and a magical pony-tailed swordswoman who hides her true feelings from others (Kaori/Seraphim).