1boy, black_nails, blue_background, brown_eyes, brown_horns, dairoku_ryouhei, dark-skinned_male, dark_skin, full_body, gun, gustav_hectarion, hand_up, hat, hawaiian_shirt, holding, holding_gun, holding_weapon, horns, male_focus, monster_boy, navel, open_clothes, open_shirt, over_shoulder, seiyakarutaken, shirt, short_sleeves, solo, straw_hat, sun_hat, sunglasses, tail, taur, weapon, white_hair