 If you liked
Mx0
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 ...then you might like
Toaru Majutsu no Index
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Both series deal with two guys who end up in magical situations by accident, one has a magic power of it's own tho', and one.. not. They get in to all kinds of situations involving magic and other powers, fights or just nonsense, both shows deal with a great amount of action, to both, there's also a side of comedy, drama and a bit of romance.