Rule 34 Dev - 4boys androgynous cow_boy cow_ears cow_horns cow_tail cowbell cowbell_collar crossover femboy femboy_focus feminine_male gay girly guilty_gear heart_hands kagamine_len male_only marco_diaz moyashimon soiacalmanienti star_vs_the_forces_of_evil testament_(guilty_gear) vocaloid yaoi yuuki_kei|12602804184