Age: 15 Kaoru Mashiko is a first year at Osafune Girls Academy. Her sword is Nenekirimaru. She is taciturn and does not freely expend energy to trouble herself. She uses the very masculine firstperson pronoun ore. Even though she is short she is a power fighter who can wield a huge sword. She is accompanied by her guardian beast Nene an aratama. She acts annoyed by Ellen but actually puts a lot of trust in her.