Jewel Knights - Crusaders

You are Ginji, a Japanese youth whose two hobbies are girls and getting into fights. One night, while walking in a dark alley, he comes across three beautiful females wearing bizarre outfits battling monsters from another dimension. Against his better judgement, he gets involved in the battle, and before he knows it, he's flat on his back. Waking up in the hospital, he's surprised to see one of the girls there: she'd brought him to the hospital after he was injured.