Rule 34 Dev - 10s 1girl armband bad_id bad_pixiv_id blue_hair cape female_focus fins fish_tail gloves kurono-kuro kurono_kuro magical_girl mahou_shoujo_madoka_magica mahou_shoujo_madoka_magica_(anime) mermaid midriff miki_sayaka miki_sayaka_(magical_girl) monster_girl navel short_hair solo soul_gem sword tail weapon|2769635700