headset 7 1girl 4 touhou 4 gun 4 monochrome 4 weapon 4 gloves 3 operator 3 rifle 3 solo 3 black_hair 2 hair_ornament 2 hairclip 2 multiple_girls 2 ribbon 2 scope 2 sniper_rifle 2 assault_rifle 2 simple_background 2 sketch 2 long_hair 2 highres 2 3boys 1 ^_^ 1 adult 1