![1girl 41_(chvinyau) absurdres bangs black-framed_eyewear black_gloves black_hair black_skirt boots breasts brown_footwear brown_shirt cleavage collared_shirt commentary_request copyright_request eyebrows_visible_through_hair full_body glasses gloves golden_gun green_eyes gun hair_between_eyes handgun high_heel_boots high_heels highres holding holding_gun holding_weapon knee_boots long_hair looking_at_viewer low_ponytail mauser_c96 medium_breasts pigeon-toed ponytail puffy_short_sleeves puffy_sleeves semi-rimless_eyewear shirt short_sleeves simple_background skirt solo standing under-rim_eyewear underbust weapon weapon_request white_background rating:s score:5 post #3833173](/cdn_image/preview/13/2e/132e495ddd2e1903e935b02043da965e.jpg)
As it's name implies, this tag is used if a copyright from which a character comes from is unknown.
If it is known that a character doesn't come from an established copyright, then use the original tag. See the wiki page for original for a list of Japanese tags that indicate an original character.
The following tags are aliased to this tag: /copy and series_request (learn more).