1girl arknights bead_necklace beads black_shirt closed_mouth commentary expressionless green_hair highres horns hoshiguma_(arknights) hoshiguma_(patrolling_ronin)_(arknights) jewelry katana long_hair necklace official_alternate_costume oni oni_horns shirt sigma_eeco simple_background single_horn smoke straight_hair sword turtleneck upper_body weapon weapon_on_back white_background yellow_eyes