Division of demographics into gender specific groups is so confusing. This manga is enjoyable for both genders, but goes into shounen category. It seems like boys-targeted and all-gender-targeted manga are labelled as shounen and girls-targeted are labelled as shoujo - like in some languages plural pronouns or verb conjugated forms are feminine if all people in the group are females (elles in french, zeny byly in czech, обе in russian) but masculine if at least one person in group is male.