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2006 2_horns 4_fingers action_pose anthro arm_blade bared_teeth biped curved_horn demon detailed detailed_background dragon duel_masters empty_eyes featureless_crotch fingers floating front_view grey_horn horn long_tail magic_user male markings moon mountain muscular muscular_anthro muscular_male mythological_creature mythological_scalie mythology nakagawa_(pixiv)night nude nude_anthro nude_male outside portal pose purple_body realistic ridged_horn rock scalie shaded sharp_fingers sharp_teeth sky snout soft_shading solo spade_tail spikes spikes_(anatomy)tail teeth thick_tail white_body white_markings yellow_eyes