Maburaho is primarily a Harem Comedy, there isn't really a whole lot of drama, until much later on in the anime, before then it's a really happy upbeat anime.
Maburaho focuses on a character named, "Shikimori, Kazuki", a average male who has nothing special about him, your typical harem setup. But in fact he is actually worst then average you come to realize, set in a alternate present japan, everyone has magical powers but they can only use them so many times before they turn into ash. Most people can use theirs at least 1000+ times, but Kazuki can only use his 8 times. Later he learns that he is actually in the bloodline of the world's most powerful magicians, and this is when the harem aspects start, everyone wants his genes for themselves so everyone chases him around and tries to become friends with him or just rape him.