Maken-Ki!

Japanese Title: マケン姫っ！

English Title: Maken-Ki! Battling Venus

Plot
Takeru Ohyama has enrolled at Tenbi Academy, a high school that converted from all-girls to co-ed. Hoping to have a life full of ogling pretty girls, he reunites with childhood friend Haruko Amaya, who shows him around school. However, he learns that the school is for students who possess magical and spiritual energies called Elements and who wield crafted weapons known as Makens. The students engage in school sanctioned combat matches that showcase their powers. While his own ability and Maken is not apparent at first, Takeru soon finds himself surrounded by girls, including Inaho Kushiya, an attractive girl who says she's his fiancée, and Kodama Himegami, a popular blonde who says she wants to kill him. He joins the Security Committee (魔導検警機構 madō kenkei kikō?, lit. "anti-evil organization"), also known as Maken-ki, which supports the student council's operations.